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published time ↑
Publish Time: 2026-05-28
DOI: 10.12149/103361
CSTR: 11379.11.103361
The LAMOST Data Release 14 v0 Q2 released the spectral data obtained from 2026-01-01 to 2026-03-31, including low resolution spectrum and medium resolution spectrum. 130 plates were observed at low resolution. A total of 316493 low-resolution spectra were released, including 309140 stars, 1901 galaxies and 5452 quasars. It also includes a stellar parameter catalog containing 220430 AFGK stars. Besides，164 plates were observed at medium resolution, with a total of 272373 medium-resolution non time-domain spectra，396457 medium-resolution time domain spectra, as well as stellar parameters obtained from 253547 medium-resolution spectra in total.
Publish Time: 2026-05-01
DOI: 10.12149/103360
CSTR: 11379.11.103360
According to the FAST data policy, FAST Data Center releases data from February 1,2025 to April 30, 2025. Projects carried out during this period are shown in the table below. The observed sources are listed in the attachment below. Please contact FAST Data Center (fastdc@nao.cas.cn) for the data.
Publish Time: 2026-04-23
CSTR: CSTR:11379.11.103350
The HyperMillennium is a trillion-level simulation; its completion represents a significant leap in computational cosmology. The simulation follows 4.2 trillion dark matter particles within a volume of 50.4 Gpc cubed. Designed to support next-generation galaxy surveys, the simulation achieves a mass resolution of around 500 million solar masses, enabling the detailed study of rare, massive structures, large-scale structures and structure formation. The entire simulation contains various data outputs, including particle snapshots, FoF groups/substructure catalogues, merging tree and mock galaxy catalogues.
The current data release originated from the lead paper of the HyperMillennium project, which includes nine Abell 2744 analogues with various information about their member galaxies.
Publish Time: 2026-03-20
DOI: 10.12149/103329
CSTR: 11379.11.103329
LAMOST Data Release 13 v1.0 contains LAMOST medium/low resolution observations of the sky and catalog information from 2011-10-24 to 2025-05-29. A total of 6,961 plates were observed during the low resolution sky survey, and 13,467,468 spectra were obtained, including 13,080,082 stellar spectra, 283,691 galactic spectra, and 103,695 quasar spectra; It contains 8,981,588 records of atmospheric parameter information for A/F/G/K stars, 986,068 records of M-type stars and their parameter information, 794,269 records of A-type star parameter information, 19,238 of white dwarf star information, 668 of cataclysmic variable stars, 29,114 of galaxy constellation synthesis information, and 31,030 of quasar characteristic emission line information. A total of 17,356,714 spectra in 3,404 plates were obtained through mid-resolution sky surveys, including 4,141,972 non time domain spectra and 13,214,742 time domain spectra. Medium resolution star parameter catalog information 3,958,829 rows in total, including 2,135,316 rows for non-time domain observations and 1,823,513 rows for time-domain observations.
Publish Time: 2026-02-10
DOI: 10.12149/103268
CSTR: 11379.11.103268
The LAMOST Data Release 14 v0 Q1 （LAMOST DR14 v0 Q1）released the spectral data obtained from September 24th to December 31st 2025, including low resolution spectrum and medium resolution spectrum. 146 plates were observed at low resolution and 191 at medium resolution. A total of 386029 low-resolution spectra were released, including 375255 stars, 3080 galaxies and 7694 quasars. It also includes a stellar parameter catalog containing 259878 AFGK stars. Besides，a total of 287258 medium-resolution non time-domain spectra， 631436 medium-resolution time-domain spectra, as well as stellar parameters obtained from 314269 medium-resolution spectra in total.
Publish Time: 2026-02-01
DOI: 10.12149/103313
CSTR: 11379.11.103313
According to the FAST data policy, FAST Data Center releases data from November 1,2024 to January 31, 2025. Projects carried out during this period are shown in the observation project table . The observed sources are listed in the observation source table. Please contact FAST Data Center (fastdc@nao.cas.cn) for the data.
Publish Time: 2026-01-29
ZTF image data is a large-scale time-domain survey dataset acquired by the 48-inch Samuel Oschin Schmidt Telescope located at Palomar Observatory in the United States. The facility is equipped with a 576-megapixel camera covering a 47 square degree field of view, scanning the entire northern celestial sphere every 2-3 days with a limiting magnitude of approximately g~20.8 and r~20.6 (AB magnitude, 5σ, 30-second exposure).
ZTF data products include single-epoch images (exceeding 69 million to date), coadded reference images (approximately 188,000), difference images, PSF-fit photometric catalogs, and real-time alert streams, all publicly released through the NASA/IPAC Infrared Science Archive (IRSA). These data are extensively utilized for the discovery and study of transients including supernovae, variable stars, active galactic nuclei (AGN), gravitational wave electromagnetic counterparts, and near-Earth asteroids, representing one of the most important time-domain survey data resources prior to the Rubin Observatory (LSST) era.
This dataset contains image data for Field 792, a special deep-field tile that overlaps with the Hubble Space Telescope's EGS (Extended Groth Strip) deep field. The EGS field is a renowned deep-sky region observed by Hubble's ACS (Advanced Camera for Surveys), centered at right ascension 214.825°, declination +52.823°, covering a rectangular area of approximately 10.1 arcminutes × 70.5 arcminutes. Field 792 has multiple CCD quadrant overlaps with the EGS field, particularly rcid 5 (readout channel 5) and rcid 23 (readout channel 23). The overlapping region between Field 792 rcid 5 and the EGS field spans approximately 10.2 arcminutes × 37.5 arcminutes. This field has accumulated 1,218 exposures in the g-band, 1,279 exposures in the r-band, and 445 exposures in the i-band from March 2018 to December 2024. The right ascension range is approximately 214°-215° (about 14h20m-14h28m), with declination around +52° to +53°.
Due to its overlap with the Hubble deep field, Field 792 has become an important region for studying active galactic nucleus (AGN) variability, tidal disruption events (TDEs), and other phenomena, combining the advantages of ZTF's high-cadence time sampling with Hubble's high spatial resolution.
Publish Time: 2026-01-29
The SkyMapper DR4 (Data Release 4) catalog represents one of the most comprehensive optical photometric surveys of the southern sky to date. Released in February 2024, the DR4 master table (dr4.master) comprises approximately 700 million unique astronomical objects derived from 1.5 billion individual detections, covering an area of 26,000 square degrees extending from the South Celestial Pole to declination δ=+16 degree (with partial coverage reaching δ=+29 ). Constructed from over 400,000 science-grade images acquired between March 2014 and September 2021 using the 1.3-meter SkyMapper telescope at the Australian National University, the survey operates with a six-filter photometric system (u,v,g,r,i,z ). The typical 10σ limiting magnitudes range from 18.5 to 20.5 in the AB system, varying by filter bandpass; the deepest co-added regions reach approximately 22nd magnitude, while the bright-end saturation limit is around 9.5 mag. All magnitudes in the SkyMapper survey are reported in the AB magnitude system. To facilitate rapid verification of photometric calibration and ensure continuity with previous data releases, the DR4 master table retains the object identifiers (object_id) from DR2 and DR3 where applicable, assigning new identifiers only to previously uncatalogued sources (starting from 2×10e9 ).
Publish Time: 2025-12-31
The Gaia-ESO Spectroscopic Survey, initiated by the European Southern Observatory (ESO), is a comprehensive endeavor to determine stellar parameters and elemental abundances for a vast sample of Milky Way stars, supplementing the astrometric data from the Gaia mission. This survey leverages the FLAMES instrument on ESO's 8-meter Very Large Telescope (VLT), utilizing both the Giraffe and UVES spectrographs to study all Milky Way populations, with a particular emphasis on open star clusters.
The survey encompasses data from over 110,000 unique stellar targets, observed from December 31, 2011, to January 26, 2018. The dataset includes high-precision radial velocities, stellar parameters such as effective temperature and surface gravity, metallicity ([Fe/H]), and abundances of up to 31 elements. Additionally, it provides crucial parameters like lithium abundances, equivalent widths of Hα and Hβ emissions, and chromospheric fluxes.
The Gaia-ESO dataset is distinguished by its meticulous radial velocity measurements and detailed multi-element abundance analyses. The data processing involves multiple pipelines and nodes, along with the use of internal calibrators to ensure the combination and homogenization of results. The scientific applications of this dataset are extensive, encompassing investigations into the structure and evolution of the Milky Way, stellar physics and evolution, and the calibration of stellar ages.
These data are provided by the European Southern Observatory (ESO) originally.
When using the data, please comply with the CC BY 4.0 license and acknowledge the source as required by ESO.
Publish Time: 2025-12-02
DOI: 10.12149/103208
CSTR: 11379.11.103208
This dataset is the Customized Multi-band Standard Star Catalog for the Shanghai Astronomy Museum 1-meter Telescope (DOT) Observing System , serving as a core deliverable for the project on Astronomical Detection and Spectral Distribution Analysis of Urban Night Sky Brightness. It was generated using data from the European Space Agency (ESA) Gaia Third Data Release (DR3) , featuring approximately 2.4 million G-band stars brighter than the 12th magnitude across the entire sky. The data utilizes Synthetic Photometry to integrate the low-resolution XP spectra of these stars with the response curves of the DOT system's seven specific filters, with all resulting magnitudes calibrated to the AB magnitude system.
Publish Time: 2025-11-01
DOI: 10.12149/103207
CSTR: 11379.11.103207
According to the FAST data policy, FAST Data Center releases data from August 1,2024 to October 31, 2024. Projects carried out during this period are shown in the table below. The observed sources are listed in the attachment below. Please contact FAST Data Center (fastdc@nao.cas.cn) for the data.
Publish Time: 2025-10-27
Euclid launched in July 2023 as a European Space Agency (ESA) mission with involvement by the National Aeronautics and Space Administration (NASA). The primary science goals of Euclid are to better understand the composition and evolution of the dark Universe. The Euclid Space Telescope carries two instruments: the VISible instrument (VIS) and the NearInfrared Spectrometer and Photometer (NISP). The Euclid data set will include data collected with
these space-based instruments as well as “external” (EXT) images collected by ground-based telescopes and served alongside the Euclid images.
According to the plan, the main mission duration of the Euclid mission is about 6.5 years. The first three months after launch are for commissioning, followed by a six-year main survey phase. If Euclid is still operating normally after 6.5 years, there may be an extension for additional surveying. The Euclid mission will provide scientific data to the global scientific community through three main data releases (DR1, DR2, DR3), with the final DR3 being released one year after the end of the main survey. Before each main data release (DR), there will be a “quick release” (Q1, Q2, Q3, Q4) of data from selected areas and data products, allowing scientists to get an early look at the upcoming data and refine their data analysis tools. The Euclid Quick Data Release 1, short as Euclid Q1, is the first quick release as well as the first large-scale data release of the Euclid mission.
The Euclid Q1 released on March 19, 2025, includes data from four fields, covering a total of approximately 60 square degrees. Although it includes three Euclid Deep Fields, the exposure depth of the Q1 data is at the level of the Euclid Wide Survey, not the deep field survey. The Euclid Q1 image data comprises raw and calibrated single-exposure data in the visible and near-infrared wavelengths, as well as merged “mosaic” large images. The “mosaic” images also incorporate data from ground-based telescopes, such as the Dark Energy Survey (DES) in the southern sky and the Ultraviolet Near-Infrared Optical Northern Survey (UNIONS) in the northern sky. The Euclid Q1 catalog data mainly includes merged image catalogs (3 tables), photometric redshift catalogs (8 tables), and spectroscopic catalogs (13 tables). The catalog data, as well as the calibrated and merged images, are processed and generated by different processing functions (PF). Corresponding to the eight subdirectories for storing tables, spectrum, and image data, names of which are related with the pipeline Processing Functions (PF), there are eight sub-metadata at the bottom of this page. Please refer this Euclid Q1 paper for more details https://arxiv.org/abs/2503.15302 as well as this user guide: https://irsa.ipac.caltech.edu/data/Euclid/docs/euclid_archive_at_irsa_user_guide.pdf.
Publish Time: 2025-09-26
DOI: 10.12149/103188
CSTR: 11379.11.103188
LAMOST Data Release 12 v1.1 contains LAMOST medium/low resolution observations of the sky and catalog information from October 24, 2011 to June 3, 2024. A total of 6602 plates were observed during the low resolution sky survey, and 12,605,485 spectra were obtained, including 12,236,412 stellar spectra, 279,836 galactic spectra, and 89,237 quasar spectra; It contains 8,377,811 records of atmospheric parameter information for A/F/G/K stars, 986,068 records of M-type stars and their parameter information, 734,731 records of A-type star parameter information, 18,293 of white dwarf star information, 624 of cataclysmic variable stars, 28896 of galaxy constellation synthesis information, and 2,332 of quasar characteristic emission line information. A total of 15,471,948 spectra in 2,892 plates were obtained through mid-resolution sky surveys, including 3,361,604 non time domain spectra and 12,110,344 time domain spectra. Medium resolution star parameter catalog information 3,224,926 rows in total, including 1,640,359 rows for non-time domain observations and 1,584,567 rows for time-domain observations.
Publish Time: 2025-09-26
DOI: 10.12149/103169
CSTR: 11379.11.103169
LAMOST Data Release 11 v2.0 contains LAMOST medium/low resolution observations of the sky and catalog information from October 24, 2011 to June 15, 2023. A total of 6,283 plates were observed during the low resolution sky survey, and 11,931,197 spectra were obtained, including 11,570,626 stellar spectra, 277,566 galactic spectra, and 83,005 quasar spectra; It contains 7,898,024 records of atmospheric parameter information for A/F/G/K stars, 926,048 records of M-type stars and their parameter information, 661,420 records of A-type star parameter information, 17,501 of white dwarf star information, 572 of cataclysmic variable stars, 28,780 of galaxy constellation synthesis information, and 19,137 of quasar characteristic emission line information. A total of 13,156,050 spectra in 2,393 plates were obtained through mid-resolution sky surveys, including 2,737,394 non time domain spectra and 10,418,656 time domain spectra. Medium resolution star parameter catalog information 2,594,070 rows in total, including 1,301,8287 rows for non-time domain observations and 1,292,242 rows for time-domain observations.
Publish Time: 2025-08-01
DOI: 10.12149/103167
CSTR: 11379.11.103167
According to the FAST data policy, FAST Data Center releases data from May 1, 2024 to July 31, 2024. Projects carried out during this period are shown in the table below. The observed sources are listed in the attachment below. Please contact FAST Data Center (fastdc@nao.cas.cn) for the data
Publish Time: 2025-07-22
DOI: 10.12149/103156
CSTR: 11379.11.103156
The LAMOST Data Release 13 v0 （LAMOST DR13 v0 ）released the spectral data obtained from Octobr 1st, 2024 to June 30st, 2025, including low resolution spectrum and medium resolution spectrum. 359 plates were observed at low resolution and 512 at medium resolution. A total of 861,916 low-resolution spectra were released, including 843,603 stars, 3,855 galaxies and 14,458 quasars. It also includes a stellar parameter catalog containing 603,781 AFGK stars. Besides，a total of 780,368 medium-resolution non time-domain spectra， 1,104,398 medium-resolution time domain spectra, as well as stellar parameters obtained from 733,903 medium-resolution spectra in total.
Publish Time: 2025-07-22
DOI: 10.12149/103144
CSTR: 11379.11.103144
The LAMOST Data Release 13 v0 Q3 （LAMOST DR13 v0 Q3）released the spectral data obtained from April 1st to June 30th, 2025, including low resolution spectrum and medium resolution spectrum. 75 plates were observed at low resolution and 90 at medium resolution. A total of 173,441 low-resolution spectra were released, including 168,950 stars, 1,278 galaxies and 3,213 quasars. It also includes a stellar parameter catalog containing 114,178 AFGK stars. Besides，a total of 181,898 medium-resolution non time-domain spectra， 118,265 medium-resolution time domain spectra, as well as stellar parameters obtained from 131,710 medium-resolution spectra in total.
Publish Time: 2025-07-16
DESI Data Release 1 (DR1) includes spectra for more than 18 million unique targets from Main Survey observations taken between May 2021 and June 2022. In addition, DR1 includes all the data taken as part of DESI Survey Validation which was originally released as part of the Early Data Release but reprocessed with the same reduction pipeline as the Main Survey data. The DESI DR1 has a total data volume exceeding 300TB. It includes raw spectra, processed spectra, redshift catalogs, large-scale structure and QSO catalogs, target source catalogs, and value-added catalogs. Due to its massive size, only the redshift and large-scale structure/QSO catalogs are shared here.
Publish Time: 2025-07-08
DOI: 10.12149/103032
CSTR: 11379.11.103032
The Chinese Plate-Digitizing Project has digitized a total number of about 30,000 astronomical plates from 11 telescopes of five observatories (SHAO, NAOC, PMO, YNAO, and QDO) in China, spanning nearly 100 years of observations.
In this work, we present a photometric calibration method to calibrate about 15,000 single-exposure plates to the JKC photometric system. Using standard stars constructed from the BEST database（https://nadc.china-vo.org/data/best/）, we have identified and corrected various systematic effects (including the magnitude term, color term, and flat-field term) to a high precision. The final photometric precision is typically 0.15, 0.23, 0.17, 0.11, 0.19 mag for plates collected in SHAO, NAOC, PMO, YNAO, and QDO, respectively, with best cases reaching 0.07, 0.08, 0.06, 0.05, and 0.11 mag, respectively. Candidates of variable sources are also identified.
The naming format for the photometric catalogs (under the "table" directory) are: “plate name - calibration band.fits”. The variable source candidates (under the “vars” directory) naming format to Gaia DR3's “sourceID.fits”.
Publish Time: 2025-07-07
This is the dataset of ALMA Large program ALMAGAL: ALMA Evolutionary study of High Mass Protocluster Formation in the Galaxy (PID: 2019.1.00195.L). ALMAGAL aims at observing 1mm continuum and lines toward more than 1000 dense clumps with M>500 M_sun and d < 7.5 kpc with similar linear resolution. The sample covers all evolutionary stages from IRDC to HII regions from the tip of the Bar to the outskirts of the Galaxy. The setup with 0.1 mJy sensitivity will enable a complete study of the clump-to-core fragmentation process down to at least 1000 AU and 0.3 M_sun Galaxy-wide, mapping the temperature and the local/global infall velocity patterns of the cores-hosting clumps. Data are organized into five categories: auxiliary (calibration tables, scripts, logs and quality assurance reports), product (FITS products for science targets and calibrators), raw (uncalibrated raw data used to make final products), raw semipass (flawed or incomplete uncalibrated raw data not used), and external (externally contributed data products). The main science data products include primary beam corrected aggregate interferometric continuum images (product/*_sci*cont*pbcor.fits), primary beam corrected continuum subtracted interferometric spectral line cubes (product/*_sci*cube*pbcor.fits), and single-dish images (product/*sd.im.fits). The qa directory provides quality reports, including QA2 data quality evaluation reports and instructions for calibrating the raw data (*.qa2_report.{pdf,html}) as well as data calibration and imaging diagnostic tables and plots (*.weblog.tgz). More description of additional data products can be found in the readme files.
Publish Time: 2025-06-17
The German eROSITA Consortium (eROSITA-DE) makes public the first six months of the SRG/eROSITA all-sky survey (eRASS1) data whose proprietary rights lie with the German eROSITA consortium. Data rights are split by Galactic longitude (l) and latitude (b), with a division marked by the great circle passing through the Galactic poles (l,b)=(0,+90);(0,-90) and the Galactic Center SgrA* (l,b)=(359.94423568,-0.04616002): data with -0.05576432< l <179.94423568 degrees (Eastern Galactic hemisphere) belong to the Russian consortium, while data with 359.94423568 > l >179.94423568 degrees (Western Galactic hemisphere) belong to eROSITA-DE. The Western Galactic hemisphere observations were released to the public on 31 January 2024. DR1 consists of 20626.5 square degrees, which have a variety of effective exposure values, ranging from ∼100 seconds in the Ecliptic equator to more than 10,000 seconds close to the Ecliptic pole in the 0.6—2.3 keV energy band. eROSITA-DE releases calibrated event lists in the 0.2—10 keV energy band, images, exposure maps, background maps, and sensitivity maps as well as flux upper limits in different energy bands. These data products are organised in separate sky fields of 3.6x3.6 degrees. Furthermore, source spectra and light curves for selected (bright) targets are released. In the archive data, the products are arranged in directories named by the sky tile declination number (DDD), with subdirectories of the right-ascension number (RRR). Inside those are the results for different analysis chains (EXP, DET, SOU and UPP). EXP contains the main event file and images in each band. DET contains the exposure maps in each band and source detection products. SOU contains the source products. The upper limit products are inside UPP. Please note that source products are only generated for the higher signal to noise sources. For a more detailed description of the data types, please refer to eROSITA-DE:DataRelease1:eSASS4DR1_DataProductsDescription.
Publish Time: 2025-05-06
DOI: 10.12149/103130
CSTR: 11379.11.103130
The LAMOST Data Release 13 v0 Q2 （LAMOST DR13 v0 Q2）released the spectral data obtained from January 1st, 2025 to March 31st, 2025, including low resolution spectrum and medium resolution spectrum. 144 plates were observed at low resolution and 249 at medium resolution. A total of 351993 low-resolution spectra were released, including 345232 stars, 1272 galaxies and 5489 quasars. It also includes a stellar parameter catalog containing 242522 AFGK stars. Besides，a total of 364046 medium-resolution non time-domain spectra， 464880 medium-resolution time domain spectra, as well as stellar parameters obtained from 328588 medium-resolution spectra in total.
Publish Time: 2025-05-01
DOI: 10.12149/103129
CSTR: 11379.11.103129
According to the FAST data policy, FAST Data Center releases data from February 1,2024 to April 30, 2024. Projects carried out during this period are shown in the table below. The observed sources are listed in the attachment below. Please contact FAST Data Center (fastdc@nao.cas.cn) for the data.
Publish Time: 2025-04-17
DOI: 10.12149/103126
CSTR: 11379.11.103126
Laser ranging SLR data set is a series of laser ranging data file set formed by the 60CM aperture telescope of Changchun Satellite Observation Station to observe high orbit and low orbit satellites in orbit, including 7 data element subsets of ocean remote sensing satellite, navigation satellite and laser ranging satellite series specially used for satellite. The laser monopulse band is 532nm, and the data contains standard point NPT and FRD file data, including V1 and V2 versions, and the data observation time is from January 1, 2024 to December 31, 2024.
Publish Time: 2025-04-16
DOI: 10.12149/103117
CSTR: 11379.11.103117
The Chinese pulsar timing array (CPTA) data release I includes the data for 57 millisecond pulsars using FAST telescope. The data spans from June 2019, to September 2022. The CPTA aims at detecting the nano-Hertz gravitational waves directly.
Publish Time: 2025-03-26
DOI: 10.12149/103095
CSTR: 11379.11.103095
LAMOST Data Release 12 V1.0 contains LAMOST medium/low resolution observations of the sky and catalog information from October 24, 2011 to June 3, 2024. A total of 6,605 plates were observed during the low resolution sky survey, and 12,602,390 spectra were obtained, including 12,231,890 stellar spectra, 281,059 galactic spectra, and 89,441 quasar spectra; It contains 8,370,041 records of atmospheric parameter information for A/F/G/K stars, 988,254 records of M-type stars and their parameter information, 734,010 records of A-type star parameter information, 18,293 of white dwarf star information, 624 of cataclysmic variable stars, 28,946 of galaxy constellation synthesis information, and 23,369 of quasar characteristic emission line information. A total of 15,475,985 spectra in 2,894 plates were obtained through mid-resolution sky surveys, including 3,365,641 non time domain spectra and 12,110,344 time domain spectra. Medium resolution star parameter catalog information 3,226,476 rows in total, including 1,641,907 rows for non-time domain observations and 1,584,569 rows for time-domain observations.
Publish Time: 2025-02-01
DOI: 10.12149/103094
CSTR: 11379.11.103094
According to the FAST data policy, FAST Scientific Data Release 20， observed from November 1,2023 to January 31 2024， was releasedon 1st Feb, 2025. Projects carried out during this period are shown in the table below. The observed sources are listed in the attachment below. Please contact FAST Data Center (fastdc@nao.cas.cn) for the data.
Publish Time: 2025-01-25
DOI: 10.12149/103075
CSTR: 11379.11.103075
The LAMOST Data Release 13 v0 Q1 （LAMOST DR13 v0 Q1）released the spectral data obtained from October 1st, 2024 to December 31st, 2024, including low resolution spectrum and medium resolution spectrum. 140 plates were observed at low resolution and 173 at medium resolution. A total of 336482 low-resolution spectra were released, including 329421 stars, 1305 galaxies and 5756 quasars. It also includes a stellar parameter catalog containing 247081 AFGK stars. Besides，a total of 234424 medium-resolution non time-domain spectra，521253 medium-resolution time-domain spectra, as well as stellar parameters obtained from 273605 medium-resolution spectra in total.
Publish Time: 2025-01-08
DOI: 10.12149/100801
CSTR: 11379.11.100801
The scientific data content of the project mainly includes experimental test data, papers, and patents, etc., specifically including: (1) High-gain broadband feed and antenna design, establishing a low sidelobe and beam consistency cooperative design method for the feed antenna array. In response to the high sensitivity and polarization insensitivity characteristics of radio astronomy, research and reveal the sidelobe reduction mechanism of dual-polarization high-gain Vivaldi antenna arrays and the technology for maintaining the consistency of E/H plane beams, to improve antenna reception sensitivity and reduce feed polarization sensitivity. Project assessment indicators: C-band antenna array maximum gain of 22dB in the normal direction, beamwidth of 12.5°, and beam scanning angle of ±45°. Data content: Radio telescope feed antenna array performance test parameters from third-party test unit reports and antenna array performance parameters published in papers. (2) Filter feed network design, establishing an antenna decoupling and noise suppression method based on artificial surface plasmon polaritons (SPPs) technology. In response to antenna performance degradation caused by mutual coupling, propose a new type of artificial SPPs transmission line design for antenna array feed networks, reveal the strong electromagnetic confinement characteristics of artificial SPPs in suppressing antenna mutual coupling and the low-pass characteristics in suppressing high-order mode interference signals, to reduce port coupling of highly integrated feeds and suppress interference noise. Project assessment indicators: Filter feed network port mutual coupling ≤-20 dB, notch depth -40dB, in-band insertion loss ≤0.15dB, in-band VSWR ≤1.2, minimum out-of-band suppression -40dB. Data content: Electromagnetic propagation performance parameters of radio telescope feed filter feed networks published in papers. (3) Low-noise amplifier chip low-temperature design and other key technologies for cooperative research on phased array feeds. Establish a low-noise amplifier LNA low-temperature modeling design theory for SiGe and GaAs processes. By studying the low-temperature nanotransistor small-signal circuit model and its parameter extraction method, research the low-temperature nanotransistor small-signal noise model; by studying the noise formation mechanism of low-temperature transistors, reveal the relationship between the main noise sources and the key design parameters of the transistor physical structure, and establish an accurate transistor equivalent circuit model. Project assessment indicators: Amplifier gain greater than 30dB, noise temperature less than 14K, power consumption less than 10mW. Data content: Electrical performance parameters of radio telescope feed amplifiers published in papers.
Publish Time: 2024-12-06
DOI: 10.12149/103031
CSTR: 11379.11.103031
This dataset is the spectrum line table for pymoog. pymoog is a software developed by Dr Mingjie Jian. The project web is https://github.com/MingjieJian/pymoog . pymoog is a python3 wrapper for running the LTE spectrum synthesis part of the code MOOG written by Chris Sneden. It wraps up the (a bit) teidous steps for generating a synthetic spectra into four python commands, while retaining the functions provided by MOOG. Besides, it also provides some other functions for analysing the MOOG result, mainly contribution function and fitting stellar parameters.
Publish Time: 2024-11-30
Dark Energy Survey Data Release 2 (DES DR2) is a dataset captured by the Dark Energy Camera (DECam), which is mounted on the Blanco Telescope at the Cerro Tololo Inter-American Observatory in Chile. The data from DES DR2 originates from observations conducted between August 15, 2013, and January 9, 2019, spanning 681 distinct observation nights. The data primarily consists of wide-field imaging and time-domain project data, with the wide-field footprint designed to significantly overlap with the South Pole Telescope (SPT) survey and SDSS Stripe 82 to enhance overall calibration. DES DR2 includes 96,263 DECam exposures, of which 83,706 are part of the wide-field survey and 12,557 are part of supernova surveys and other projects. Characteristically, each location in DES DR2 is typically observed by 7-10 overlapping DECam exposures in the griz bands. The median point spread function (PSF) full width at half maximum (FWHM) across different bands are: g=1.11", r=0.95", i=0.88", z=0.83", and Y=0.90". The processing methods involve image processing, astrometric calibration, and photometric calibration. The data is processed through the DESDM pipeline, which includes image correction, astrometric calibration, and photometric calibration to ensure the consistency and accuracy of the data. In terms of quality, the exposures in DES DR2 have a median airmass of 1.2, with over 99% of the exposures having a airmass less than 1.4. All magnitudes in all bands are expressed in the AB system (Oke 1974), and all astrometric coordinates are provided in the Gaia-CRF2 reference frame (Gaia Collaboration 2018). The DES DR2 dataset has a wide range of applications, including the study of dark energy, mapping of the large-scale structure of the universe, research on galaxy evolution, and the distance estimation of Type Ia supernovae. Here we have both the image and catalog data. And these data are downloaded from https://desdr-server.ncsa.illinois.edu/despublic/dr2_tiles/. You can get the more detailed information through https://des.ncsa.illinois.edu/releases/dr2.
Publish Time: 2024-11-01
DOI: 10.12149/103030
CSTR: 11379.11.103030
According to the FAST data management policy, FAST Scientific Data Release 19 was published on 1st November 2024. The published scientific data include the observation data from Auguest the 1st to October the 31th, 2023. The observation programs and sources included during this period are shown in the tables below. If you need publicly available observation data, please contact the FAST data center（ fastdc@nao.cas.cn ）.
Publish Time: 2024-10-21
The Zwicky Transient Facility (ZTF) conducts a wide-field time-domain survey using the Samuel Oschin 48-inch Schmidt Telescope at Palomar Observatory. The initial observations began in March 2018, and since the first data release, new versions of the data have been published regularly, approximately every two to six months. ZTF Data Release 21 (DR21) includes observational data from March 17, 2018, to February 29, 2024, spanning about 71 months. This encompasses both public and private survey projects, with private survey observations concluding on October 31, 2022. The camera used for observations consists of 16 CCDs, each divided into 4 readout quadrants, resulting in 64 CCD-quadrant images. Each quadrant covers an area of approximately 0.854° by 0.854° on the sky. Observations are primarily conducted in the g, r, and i bands, with i-band data originating from private survey time. The main exposure time is 30 seconds, although private surveys also include exposures of 60, 90, 120, 240, and 300 seconds. Data products include raw CCD images, calibrated science images, reference images, difference images, catalogs, and light curves. The processing pipeline is managed by the ZTF Science Data System (ZSDS) at IPAC/Caltech and includes astrometric and photometric calibration, image co-addition, and difference imaging. ZTF DR21 contains approximately 56.3 million single-exposure images, 176 thousand co-added images, 860 billion detected sources, and about 4.89 billion light curves. Data quality has undergone basic automated checks but may still contain low-quality data affected by factors such as clouds, atmospheric transparency variations, and moonlight contamination. Users can filter data using quality flags. Calibrated ZTF photometry may exhibit systematic biases of up to 0.025 magnitudes for bright sources (brighter than 15.5 magnitude), and these biases are corrected in the light curve data. ZTF DR21 is a valuable resource for time-domain astronomy research, covering a large portion of the northern sky, with a long time span and moderate depth across multiple bands. The mirrored data in this release includes only light curve data. Files are organized in subdirectories by observational field ID, with each field covering an area of approximately 7° by 7°. The DR21 light curve data spans 1,181 fields, with a total of 176,218 parquet files. These files can be read using libraries such as Pandas, pyarrow, or Dask. For more detailed instructions on using the light curve files, refer to section 12.c of the ZTF DR21 documentation. The documentation can be accessed at the following link: https://irsa.ipac.caltech.edu/data/ZTF/docs/releases/dr21/ztf_release_notes_dr21.pdf.
Publish Time: 2024-09-30
DOI: 10.12149/100980
CSTR: 11379.11.100980
The laser ranging SLR dataset is composed of a 60CM aperture telescope from Changchun Artificial Satellite Observation Station, which observes high orbit and ground orbit satellites. It specifically includes remote sensing satellites for monitoring the ocean, navigation satellites, and seven subsets of data specifically used for satellite laser ranging series. The laser ranging time-series data file set is formed, with a laser single pulse band of 532nm. The data includes standard point NPT and FRD file data, including V1 and V2 versions. The data observation period is from January 1, 2023 to December 31, 2023.
Publish Time: 2024-09-29
DOI: 10.12149/103007
CSTR: 11379.11.103007
LAMOST Data Release 11 V1.1 includes spectra and catalogs obtained by LAMOST low/medium resolution survey during October 24th 2011 and June 15th 2023. For the low resolution survey, there are 6,286 plates observed, and 11,944,049 spectra are obtained in total; there are 11,586,067 stellar spectra, 275,3455 galaxy spectra, 82,527 quasar spectra. There are seven spectroscopic parameters catalogs, including the LAMOST LRS General Catalog, the LAMOST LRS A, F, G and K Type Star catalog, the LAMOST LRS A Type Star Catalog, the LAMOST LRS M Type Star Catalog, the LAMOST LRS Observed Plate Information Catalog, and the LAMOST LRS Input Catalog respectively. For the medium resolution survey, there are 13,160,087 spectra in 2,395 observation plates, among them 2,741,431 non time-domain spectra, 10,418,656 time-domain spectra. In addition, there are four catalogues: medium resolution general catalog, medium resolution parameter catalog, medium resolution observed plate information catalog, medium resolution multiple epoch catalog and medium resolution input catalog.
Publish Time: 2024-09-29
DOI: 10.12149/100988
CSTR: 11379.11.100988
LAMOST Data Release 10 v2.0 includes spectra and catalogs obtained by LAMOST low/medium resolution survey during October 24th, 2011 and June 15th, 2023. For the low resolution survey, there are 5,923 plates observed, and 11,441,011 spectra are obtained in total; there are 11,100,139 stellar spectra, 261,381 galaxy spectra, 79,491 quasar spectra. There are spectroscopic parameters catalogs, including the LAMOST LRS General Catalog, the LAMOST LRS A, F, G and K Type Star catalog, the LAMOST LRS A Type Star Catalog, the LAMOST LRS M Type Star Catalog, the LAMOST LRS Observed Plate Information Catalog, and the LAMOST LRS Input Catalog respectively. For the medium resolution survey, there are 8,259,362 spectra in 1,951 observation plates, among them 1,099,373 non time-domain spectra, 1,063,565 time-domain spectra. In addition, there are four catalogues: medium resolution general catalog, medium resolution parameter catalog, medium resolution observed plate information catalog, medium resolution multiple epoch catalog and medium resolution input catalog.
Publish Time: 2024-08-31
FIRST -- Faint Images of the Radio Sky at Twenty Centimeters -- is a project designed to produce the radio equivalent of the Palomar Observatory Sky Survey over 10,000 square degrees of the North and South Galactic Caps. Using the NRAO Very Large Array (VLA) and an automated mapping pipeline, we produce images with 1.8" pixels, a typical rms of 0.15 mJy, and a resolution of 5". At the 1 mJy source detection threshold, there are ~90 sources per square degree, ~35% of which have resolved structure on scales from 2-30". 30% of the sources have counterparts in the Sloan Digital Sky Survey. This mirror data set includes catalog and image. The image data is stored in two directories: "image/vla_first/data/" and "image/naro_first/". The first directory contains the complete data, while the second directory's data is more suitable for sharing and dissemination, as it is a subset of the first directory and can be completely replaced by the data in the "vla_first/data/" directory. The star catalog data is stored in the "catalog" directory.
Publish Time: 2024-08-03
DOI: 10.12149/100962
CSTR: 11379.11.100962
LEAVES built a compatible light curve dataset based on the open data of the All-Sky Automated Survey for SuperNovae (ASAS-SN) Catalog of Variable Stars X, Gaia Data Release 3, and Zwicky Transient Facility (ZTF) Data Release 2. LEAVES obtains time-series photometric data from the original data. The light curve of each object contains three attributes: observation time, magnitude, and magnitude error. LEAVES can be used to train and test variable star classifiers. Experimental results prove that the classifier is more compatible than the classifier established based on a single survey, and has wider applicability while ensuring classification accuracy. DR1 contains a total of 977,953 light curves of 9 types of variable stars and 134,592 light curves of non-variable stars. The 9 classes variables include Detached Algol-type binaries (EA), W Ursae Majoris type binaries (EW), Rotational variables (ROT), Fundamental Mode RR Lyrae variables(RRAB), First Overtone RR Lyrae variables (RRC), Cepheids (CEP), Semi-regular variables (SR), Mira variables (M), Delta Scuti variable stars (DSCT).
Publish Time: 2024-08-01
DOI: 10.12149/100963
CSTR: 11379.11.100963
According to the FAST data management policy, FAST Scientific Data Release 18 was published on Auguest the 1st, 2024. The published scientific data include the observation data from May the 1st to July the 31th, 2023. The observation programs and sources included during this period are shown in the tables below. If you need observation data, please contact the FAST data center（ fastdc@nao.cas.cn ）.
Publish Time: 2024-07-03
The Chandra Source Catalog (CSC) is the definitive catalog of X-ray sources detected by the Chandra X-ray Observatory. Version 2.0 (CSC2) is the second major release of the catalog; the current minor release is version 2.0.1, updated on 2020 November 24 (for more information see the Catalog Version History). CSC 2.0 represents a significant improvement with respect to version 1.1 in terms of sky coverage, sensitivity and capabilities. CSC2 includes measured properties for 317,167 unique compact and extended X-ray sources in the sky, allowing statistical analysis of large samples, as well as individual source studies. Extracted properties are provided for 928,280 individual observation detections identified in 10,382 Chandra ACIS and HRC-I imaging observations released publicly through the end of 2014. CSC 2.0 also includes—as an "alpha" release—photometric properties for 1,299 highly extended (≳30″) sources, together with surface brightness polygons for several contour levels. There are approximately 1,700 columns of tabular data with pertinent information about each source across 5 bands (broad, hard, medium, soft, and ultra-soft) for ACIS and 1 band (wide) for HRC (see the energy-bands page for the definition of these bands), and 40 data products per source.
Publish Time: 2024-06-27
DOI: 10.12149/100964
CSTR: 11379.11.100964
The LAMOST Data Release 12 v0 （LAMOST DR12 v0）released the spectral data obtained from September 18th, 2023 to June the 15th, 2024, including low resolution spectrum and medium resolution spectrum. 319 plates were observed at low resolution and 499 at medium resolution. A total of 672,482 low-resolution spectra were released, including 664,030 stars, 2,232 galaxies and 6,220 quasars. It also includes a stellar parameter catalog containing 461,719 AFGK stars. Besides，a total of 2,214,652 medium-resolution coadd spectra， 7,032,745 medium-resolution single exposure spectra, as well as stellar parameters obtained from 632,732 medium-resolution coadd spectra were released.
Publish Time: 2024-06-27
DOI: 10.12149/100948
CSTR: 11379.11.100948
The LAMOST Data Release 12 v0 Q3 （LAMOST DR12 v0 Q3）released the spectral data obtained from April 1st to June 30th, 2024, including low resolution spectrum and medium resolution spectrum. 41 plates were observed at low resolution and 69 at medium resolution. A total of 96884 low-resolution spectra were released, including 94369 stars, 536 galaxies and 1979 quasars. It also includes a stellar parameter catalog containing 70432 AFGK stars. Besides，a total of 279702 medium-resolution coadd spectra， 871734 medium-resolution single exposure spectra, as well as stellar parameters obtained from 104154 medium-resolution coadd spectra were released.
Publish Time: 2024-05-22
DOI: 10.12149/100931
CSTR: 11379.11.100931
The LAMOST Data Release 12 v0 Q2 （LAMOST DR12 v0 Q2）released the spectral data obtained from January 1st to March 31st, 2024, including low resolution spectrum and medium resolution spectrum. 130 plates were observed at low resolution and 172 at medium resolution. A total of 263,452 low-resolution spectra were released, including 259,611 stars, 1,104 galaxies and 2,737 quasars. It also includes a stellar parameter catalog containing 171,816 AFGK stars. Besides，a total of 694,032 medium-resolution coadd spectra， 2,082,430 medium-resolution single exposure spectra, as well as stellar parameters obtained from 183,275 medium-resolution coadd spectra were released.
Publish Time: 2024-05-09
This Second Data Release begins SkyMapper's exploration of the deep Southern sky. DR2 includes the first release of images from the Main Survey (with exposure times between 2.5 and 20 times longer than the Shallow Survey, depending on the filter), as well as a larger Shallow Survey dataset, image processing enhancements, and a refined photometric calibration. Included are fields observed between March 2014 and March 2018, with a number of quality cuts applied. Measurements from over 4.7 billion detections covering over 21,000 Square Degree of sky are available. They correspond to over 500 million unique astrophysical objects from magnitude 8 to 22. All magnitudes reported on this site are AB mags. Our mirror data includes only catalog data.
Publish Time: 2024-05-01
DOI: 10.12149/100930
CSTR: 11379.11.100930
According to the FAST data management policy, FAST Scientific Data Release 17 was published on 1st May 2024. The published scientific data include the observation data from Febuary the 1st to April the 30th, 2023. The observation programs and sources included during this period are shown in the tables below. If you need publicly available observation data, please contact the FAST data center（ fastdc@nao.cas.cn ）.
Publish Time: 2024-04-26
This CatWISE mirror dataset includes the CatWISE Preliminary and CatWISE2020 version. The Preliminary CatWISE catalog consists of 900,849,014 sources over the entire sky selected from WISE and NEOWISE survey data at 3.4 and 4.6 microns (W1 and W2) collected from 2010 to 2016. This dataset includes four times as many exposures and spans over ten times as large a time baseline as the AllWISE catalog.The CatWISE2020 Catalog consists of 1,890,715,640 sources over the entire sky selected from WISE and NEOWISE survey data at 3.4 and 4.6 microns (W1 and W2) collected from 2010 Jan. 7 to 2018 Dec. 13. This dataset includes six times as many exposures and spans over sixteen times as large a time baseline as the AllWISE catalog. Please refer to the readme file for more details for the two dataset.
Publish Time: 2024-03-28
DOI: 10.12149/100901
CSTR: 11379.11.100901
LAMOST Data Release 11 V1.0 contains LAMOST mid/low resolution observations of the sky and catalog information from October 24, 2011 to June 15, 2023. A total of 6,286 plates were observed during the low resolution sky survey, and 11,939,296 spectra were obtained, including 11,581,542 stellar spectra, 275,302 galactic spectra, and 82,452 quasar spectra; It contains 7,774,147 records of atmospheric parameter information for A/F/G/K stars, 898,350 records of M-type stars and their parameter information, 684,312 records of A-type star parameter information, 15,895 of white dwarf star information, 568 of cataclysmic variable stars, 28,780 of galaxy constellation synthesis information, and 19,052 of quasar characteristic emission line information. A total of 13,187,912 spectra in 2395 plates were obtained through mid-resolution sky surveys, including 2,755,609 non time domain spectra and 10,432,303 time domain spectra. Medium resolution star parameter catalog information 2,597,189 rows in total, including 1,289,581 rows for non-time domain observations and 1,307,608 rows for time-domain observations.
Publish Time: 2024-03-08
DOI: 10.12149/100742
CSTR: 11379.11.100742
Astronomical plates are the precious heritage of astronomical observation research. With the support of the Special Key Project for Fundamental Work in Science and Technology of the Ministry of Science and Technology, the Shanghai plate digitization laboratory completed the scanning and archiving of 29,314 plates in 2017. On this basis, the research team of Shanghai Astronomical Observatory conducted further astrometric calibration work on the digitized astronomical plates based on the Gaia DR2 catalog, converting the initial version of the digital plates into astronomical digital images in the standard fits format to satisfy the research work of relevant professional astronomers. The current data release contains 15,696 high quality digital plates and corresponding astrometric results, with the observation targets mainly being extrasolar objects. This batch of data contains observations from nine telescopes at five Chinese astronomical stations, namely, the National Astronomical Observatory, the Shanghai Astronomical Observatory, the Purple Mountain Observatory, the Yunnan Astronomical Observatory, and the Qingdao Observatory, and spans the period from 1901 to 1998. The astrometric precision is mainly related to the focal length of the telescopes. For the plates of long focal length telescopes, such as the 40cm binoculars refractor telescope and the 1.56-meter reflector telescope of the Shanghai Astronomical Observatory, and the 1-meter reflector telescope of the Yunnan Astronomical Observatory, the astrometric precison can be as high as 0.1-0.3″.
The differences between this release and the "Digitized Data of China Astronomical Plates: Early Data Release" are as follows: (1) The fits header information of all 6,615 astronomical plates in the early batch has been updated, and the astrometric results of these plates have been added. (2) 9081 astronomical plates and the corresponding astrometric results have been added.
Publish Time: 2024-02-22
DOI: 10.12149/100891
CSTR: 11379.21.100891
The third edition of ultra-high definition lunar surface map, with 450 million pixels, has 1294 lunar surface land place names marked, including 15 different types of landmarks, covering almost all lunar surface landmarks with observational value that can be seen by amateur telescopes, including 655 Crater, 348 Satellite Feature, 19 Oceanus, 17 Mare, 10 Sinus, 3 Palus, 9 Promontorium, 103 Rima, 8 Vallis, 43 Mons, and 37 Dorsums, 8 Rupes, 9 Catena, 1 Albedo Feature point and 24 Landing Site Names. Compared to the second version, the third board has made improvements in the following aspects: (1) adding new landmarks for four crater and eleven rimaes--Armstrong crater, Collins ,Aldrin crater, Bobillier, Rimae Pitatus, Rimae Aristarchus, Rimae Apollonius, RimaeVladimir, Rima Flammarion, Rimae Gassendi, Rima Rudolf, Rima Mairan, Rimae Palmieri, Rimae Parry, Rimae Chacornac; (2) correcting three incorrect markings--Rima
Revise the Rimae Aristarchus to the Rimae Alzimovich, correct the position of the Vallis Snellius , and move the position of the Yangel' crater to the correct position； and (3) providing more precise markings for terrain with unclear markings-- add boxes, circles, or arrows to accurately identify landmarks such as Rima, Rupes, Mons, Dorsums, Promontorium etc that are not clearly labeled yet. If you have more suggestions on the revision of land place names, please contact Liu Jing of Dongguan Science Museum or the National Astronomical Data Center.
Publish Time: 2024-02-20
DOI: 10.12149/100880
CSTR: 11379.11.100880
The LAMOST Data Release 12 v0 Q1 （LAMOST DR12 v0 Q1）released the spectral data obtained from September 18th, 2023 to December 31st, 2023, including low resolution spectrum and medium resolution spectrum. 148 plates were observed at low resolution and 258 at medium resolution. A total of 312,146 low-resolution spectra were released, including 310,050 stars, 592 galaxies and 1,504 quasars. It also includes a stellar parameter catalog containing 219,471 AFGK stars. Besides，a total of 1,240,918 medium-resolution coadd spectra， 4,078,581 medium-resolution single exposure spectra, as well as stellar parameters obtained from 345,303 medium-resolution spectra were released.
Publish Time: 2024-02-01
DOI: 10.12149/100879
CSTR: 11379.11.100879
According to the FAST data management policy, FAST Scientific Data Release 16 was published on 1st Febuary 2024. The published scientific data include the observation data from November the 1st, 2022 to January the 31st, 2023. The observation programs and sources included during this period are shown in the tables below. If you need publicly available observation data, please contact the FAST data center（ fastdc@nao.cas.cn ）.
Publish Time: 2024-01-21
DOI: 10.12149/100878
CSTR: 11379.11.100878
We present precise photometric estimates of stellar parameters, including effective temperature, metallicity, luminosity classification, distance, and stellar age, for nearly 26 million stars using the methodology developed in the first paper of this series, based on the stellar colors from the Stellar Abundances and Galactic Evolution Survey (SAGES) Data Release 1 and Gaia Early Data Release 3. The optimal design of stellar-parameter sensitive uv filters by SAGES has enabled us to determine photometric-metallicity estimates down to -3.5, similar to our previous results with the SkyMapper Southern Survey (SMSS), yielding a large sample of over five million metal-poor ([Fe/H] ≤ -1.0) stars and nearly one million very metal-poor ([Fe/H] ≤ -2.0) stars. The typical precision is around 0.1 dex for both dwarf and giant stars with [Fe/H] > -1.0, and 0.15-0.25/0.3-0.4 dex for dwarf/giant stars with [Fe/H] < -1.0. Using the precise parallax measurements and stellar colors from Gaia, effective temperature, luminosity classification, distance, and stellar age are further derived for our sample stars. This huge data set in the Northern sky from SAGES, together with similar data in the Southern sky from SMSS, will greatly advance our understanding of the Milky Way, in particular its formation and evolution.
Publish Time: 2024-01-10
DOI: 10.12149/100877
CSTR: 11379.11.100877
The Chinese Ancient Astronomy Fundamental Reference Star Catalog is a comprehensive database of bright stars across the entire sky. It is based on the Hipparcos Catalog and incorporates stellar parameter information from datasets such as HIP2 and XHIP.All data is aligned and calculated to the J2000.0 epoch. The selection criteria for stars include those with a magnitude brighter than 7, resulting in a total of 15,537 stars in the catalog. The star catalog contains coordinate information in the J2000.0 epoch, as well as the latest data on proper motion, radial velocity, and more. This facilitates the retroactive calculation of the spatial positions of stars in different historical periods, providing convenience for the verification and plotting of ancient star catalogs. The star catalog is provided in two formats: FITS and CSV.
Publish Time: 2024-01-08
DOI: 10.12149/100876
CSTR: 11379.11.100876
Stellar Abundance and Galactic Evolution Survey (SAGES) is a Northern sky survey based on SAGES photometric system. This dataset includes data release 1 (u & v bands observed by Bok 2.3m Telescope at Kitt Peak Station of Steward Observatory) and date release 1 supplement (g, r, & I bands on Nanshan One-meter Wide-field Telescope).
Publish Time: 2024-01-02
Stellar distances constitute a foundational pillar of astrophysics. The publication of 1.47 billion stellar parallaxes from Gaia is a major contribution to this. Here is a catalogue of geometric distances for 1.47 billion stars and photogeometric distances for 92% of these. These estimates, and their uncertainties, can also be used as estimates of the distance modulus. Geometric distances use only the EDR3 parallaxes. Photogeometric distances additionally use the G magnitude and BP-RP colour from EDR3. Both types of estimate involve directiondependent priors constructed from a sophisticated model of the 3D distribution, colours, and magnitudes of stars in the Galaxy as seen by Gaia, i.e. accommodating both interstellar extinction and a Gaia selection function. Tests on mock data, but moreover validation against independent estimates and open clusters, suggest our estimates are reliable out to several kpc. For faint or more distant stars the prior will often dominate the estimates.
Publish Time: 2023-12-22
The AAVSO Photometric All-Sky Survey (APASS) has reached a new milestone with its Data Release 10 (DR10). Approximately 128 million stars have been calibrated from 7 < V < 17 and in passbands B,V,u',g',r',i',z'. APASS is designed to provide calibrated photometry everywhere in the sky and for nearly all CCD images. Much like the catalogs such as UCAC or GAIA do for astrometry, APASS gives the ability to photometrically calibrate your data without having to resort to all-sky photometry. With DR10, the sky coverage is about 99%. There are still a few missing fields, primarily in the northern sky above declination 20 degrees.
Publish Time: 2023-12-13
DOI: 10.12149/100875
CSTR: 11379.11.100875
The FAST All Sky HI survey (FASHI) was designed to cover the entire sky observable by the Five-hundred-meter Aperture Spherical radio Telescope (FAST), spanning approximately 22000 square degrees of declination between -14 deg and +66 deg, and in the frequency range of 1050-1450 MHz, with the expectation of eventually detecting more than 100000 HI sources. Between August 2020 and June 2023, FASHI had covered more than 7600 square degrees, which is approximately 35% of the total sky observable by FAST. It has a median detection sensitivity of around 0.76 mJy/beam and a spectral line velocity resolution of ~6.4 km/s at a frequency of ~1.4 GHz. As of now, a total of 41741 extragalactic HI sources have been detected in the frequency range 1305.5-1419.5 MHz, corresponding to a redshift limit of z<0.09. By cross-matching FASHI sources with the Siena Galaxy Atlas (SGA) and the Sloan Digital Sky Survey (SDSS) catalogs, we found that 16972 (40.7%) sources have spectroscopic redshifts and 10975 (26.3%) sources have only photometric redshifts. Most of the remaining 13794 (33.0%) HI sources are located in the direction of the Galactic plane, making their optical counterparts difficult to identify due to high extinction or high contamination of Galactic stellar sources. Based on current survey results, the FASHI survey is an unprecedented blind extragalactic HI survey. It has higher spectral and spatial resolution and broader coverage than the Arecibo Legacy Fast ALFA Survey (ALFALFA). When completed, FASHI will provide the largest extragalactic HI catalog and an objective view of HI content and large-scale structure in the local universe.
Publish Time: 2023-12-11
DOI: 10.12149/100874
CSTR: 11379.11.100874
GoFA is a purl Golang implementation of the International Astronomical Union's (IAU) "Standards Of Fundamental Astronomy (SOFA)" library official C release http://iausofa.org. GoFA documents are in: https://pkg.go.dev/github.com/hebl/gofa. Current version is 1.19. It is based on SOFA version 19 (2023-10-11). It offers 55 routines for vector/matrix library and 192 routines for astronomy library, including time scales, Earth rotation, sidereal time, precession, nutation, polar motion, astrometry and transforms between various reference systems.
Publish Time: 2023-11-22
DOI: 10.12149/100873
CSTR: 11379.11.100873
The Chinese Space Station Telescope (CSST) primary Survey Camera (SC) is designed to conduct large-area imaging sky surveys using a sophisticated seven-band photometric system. The resulting data will provide unprecedented data for studying the structure and stellar populations of the Milky Way. To support the CSST development and scientific projects related to its survey data, we generate the first comprehensive Milky Way stellar mock catalogue for the CSST SC photometric system using the TRILEGAL stellar population synthesis tool. The catalogue includes approximately 12.6 billion stars, covering a wide range of stellar parameters, photometry, astrometry, and kinematics, with magnitude reaching down to g=27.5 mag in the AB magnitude system. The catalogue represents our benchmark understanding of the stellar populations in the Milky Way, enabling a direct comparison with the future CSST survey data.
Publish Time: 2023-11-01
DOI: 10.12149/100872
CSTR: 11379.11.100872
According to the FAST data management policy, FAST Scientific Data Release 15 was published on 1st November 2023. The published scientific data include the observation data from August the 1st, 2022 to October the 31st, 2022. The observation programs and sources included during this period are shown in the tables below. If you need publicly available observation data, please contact the FAST data center（ fastdc@nao.cas.cn ）.
Publish Time: 2023-10-26
The DESI Legacy Imaging Surveys (http://legacysurvey.org/) are a combination of three public projects (the Dark Energy Camera Legacy Survey, the Beijing–Arizona Sky Survey, and the Mayall z-band Legacy Survey) that will jointly image ≈14,000 sq. deg of the extragalactic sky visible from the northern hemisphere in three optical bands (g, r, and z) using telescopes at the Kitt Peak National Observatory and the Cerro Tololo Inter-American Observatory. The combined survey footprint is split into two contiguous areas by the Galactic plane. The optical imaging is conducted using a unique strategy of dynamically adjusting the exposure times and pointing selection during observing that results in a survey of nearly uniform depth. In addition to calibrated images, the project is delivering a catalog, constructed by using a probabilistic inference-based approach to estimate source shapes and brightnesses. The catalog includes photometry from the grz optical bands and from four mid-infrared bands (at 3.4, 4.6, 12, and 22 μm) observed by the Wide-field Infrared Survey Explorer satellite during its full operational lifetime.
Publish Time: 2023-09-28
DOI: 10.12149/100851
CSTR: 11379.11.100851
The 9th LAMOST Spectral Survey Data Release Version 2.0 includes LAMOST mid/low resolution observational spectra and catalog information from October 24, 2011 to June 12, 2021. The low resolution sky survey observed a total of 5533 plates and obtained 10809336 spectra, including 10495781 stellar spectra, 238558 galaxy spectra, 74997 quasar spectra, and corresponding information catalogs. The medium resolution sky survey obtained 1922760 non time domain spectra, 6718023 time domain spectra, and corresponding information catalogs. All data products can be found in http://www.lamost.org/dr9/v2.0/.
Publish Time: 2023-09-01
DOI: 10.12149/100777
CSTR: 11379.11.100777
This project primarily involves the processing of historical solar observation data in China, sourced from multiple domestic solar observation stations. The data exists in various formats such as paper, film, and glass plates, and is primarily scanned and digitized for electronic presentation. The electronic data generated includes: hand-drawn sunspot maps for China from 1925 to 2015, solar eclipse spectroscopic plates from Papua New Guinea in 1983, historical data from the National Astronomical Observatory of China's solar radio flux meter from 1958 to 1994, historical observation data from the National Astronomical Observatory of China's solar radio spectrometer from 1994 to 2014, solar spectrum magnetic field data from Yunnan Observatory from 1976 to 1985, fine structure plates of the sun from Yunnan Observatory from 1984 to 1993, full-disk chromosphere plates from Yunnan Observatory from 1981 to 1994, solar-terrestrial physics data for China from 1971 to 2001, and important solar eruption event data from 2000 to 2014.
Some of the data in the project is electronically preserved and has undergone scientific-level data processing to provide data suitable for scientific applications. The standardization of data into scientific-grade data includes: solar magnetic field observation data from Huairou, Beijing from 1987 to 2011, solar velocity field observation data from Huairou, Beijing from 1987 to 2011, and two-dimensional spectroscopic observation data from the solar tower from 1999 to 2015. Throughout the data processing process of the entire project, various data processing software has been developed, and a standardization report for solar physics data has been established. The data processing software includes digitization of solar radio paper tape observation data, software for extracting information from scanned images, software capable of handling multiple data levels, and standardized data processing software. The standardization report for solar physics data is primarily based on international standards combined with specific data processing procedures.
Publish Time: 2023-08-17
DOI: 10.12149/100825
CSTR: 11379.11.100825
The LAMOST Data Release 11 v0 released the spectral data obtained from October 7th 2022 to June 15th 2023, including low resolution spectrum and medium resolution spectrum. 363 plates were observed at low resolution and 444 at medium resolution. A total of 508,699 low-resolution spectra were released, including 491,598 stars, 14,067 galaxies and 3,034 quasars. It also includes a stellar parameter catalog containing 350,978 AFGK stars. Besides, 1,627,224 medium-resolution coadd spectra, 5,761,687 medium-resolution single exposure spectra, as well as stellar parameters from 414,555 medium-resolution coadd spectra were released.
Publish Time: 2023-08-17
DOI: 10.12149/100802
CSTR: 11379.11.100802
The LAMOST Data Release 11 v0 Q3 released the spectral data obtained from April 1st 2023 to June 15th 2023, including low resolution spectrum and medium resolution spectrum. 35 plates were observed at low resolution and 53 at medium resolution. A total of 44,537 low-resolution spectra were released, including 43,762 stars, 677 galaxies and 98 quasars. It also includes a stellar parameter catalog containing 32,343 AFGK stars. Besides, a total of 179,168 medium-resolution coadd spectra, 682,392 medium-resolution single exposure spectra, as well as stellar parameters obtained from 43,523 medium-resolution coadd spectra were released.
Publish Time: 2023-08-01
DOI: 10.12149/100796
CSTR: 11379.11.100796
According to the FAST data management policy, FAST Scientific Data Release 14 was published on 1st August 2023. The published scientific data include the observation data from May the 1st, 2022 to July the 31st 2022. The observation programs and sources included during this period are shown in the tables below. If you need publicly available observation data, please contact the FAST data center（ fastdc@nao.cas.cn ）.
Publish Time: 2023-07-10
DOI: 10.12149/100778
CSTR: 11379.11.100778
This data set is the optical infrared data processing data of the multi-band astronomical observation and data processing graduate course of the University of the Chinese Academy of Sciences. At present, it contains the observation data of the 2023 internship course, specifically: 1. The observation target DY Her (Delta Scuti variable star), with coordinates of 16 31 17.95，+11 59 52.5. The observation equipment is Xinglong 60cm telescope, BRV three bands with an observation date of June 17, 2023. 2. Observation target AU CrB (Delta Scuti variable star), coordinates 16 13 31.70，+32 34 42.7. The observation equipment is the Xinglong 1.26m telescope, gri three bands and the observation date is June 17, 2023.
Publish Time: 2023-06-21
DOI: 10.12149/100752
CSTR: 11379.11.100752
We present the first catalog of very-high energy and ultra-high energy γ-ray sources detected by the Large High Altitude Air Shower Observatory (LHAASO), using 508 days of data collected by the Water Cherenkov Detector Array (WCDA) from March 2021 to September 2022 and 933 days of data recorded by the Kilometer Squared 3 Array (KM2A) from January 2020 to September 2022. This catalog represents the most sensitive E > 1 TeV gamma-ray survey of the sky covering declination from −20◦ to 80◦. In total, the catalog contains 90 sources with extended size smaller than 2◦
and with significance of detection at > 5σ. For each source, we provide its position, extension and spectral characteristics. Furthermore, based on our source association criteria, 32 new TeV sources are proposed in this study. Additionally, 43 sources are detected with ultra-high energy (E > 100 TeV) emission at > 4σ significance level.
Publish Time: 2023-06-13
DOI: 10.12149/100753
CSTR: 11379.11.100753
The LAMOST Data Release 11 v0 Q2 released the spectral data obtained from December 29th, 2022 to March 31, 2023, including low resolution spectrum and medium resolution spectrum. 173 plates were observed at low resolution and 203 at medium resolution. A total of 196,792 low-resolution spectra were released, including 187,946 stars, 7,265 galaxies and 1,581 quasars. It also includes a stellar parameter catalog containing 128,821 AFGK stars. Besides, a total of 725,062 medium-resolution coadd spectra, 2,482,959 medium-resolution single exposure spectra,as well as stellar parameters obtained from 143,915 medium-resolution coadd spectra were released.
Publish Time: 2023-06-01
DOI: 10.12149/100747
CSTR: 11379.11.100747
This is the data set which contains the raw data of BOOTES-4 (Burst Optical Observer and Transient Exploring System – 4th Station) Telescope. This telescope is mainly focused on the gamma ray burst and transient following observation, which can also perform the general optical astronomical observation. All the observation data produced by this telescope are saved in FITS files. As this telescope is construct and maintenance by the Yunnan Observatories (YNAO) and the BOOTES group of Institute of Astrophysics of Andalucia (IAA) of Spain, so the observation data just shared between the research teams related to this cooperation project. We hope it can be opened to all researchers in the near future.
Publish Time: 2023-05-10
DOI: 10.12149/100744
CSTR: 11379.11.100744
BIPM Circular T is a monthly publication of the Time Department, source of traceability to Coordinated Universal Time (UTC) for the local realizations UTC(k) maintained by national institutes. Circular T provides the values of the differences [UTC – UTC(k)] every five days, for about 80 institutes regularly contributing clock and clock comparison data to the BIPM. It includes also other information relevant to the computation of these values.
Publish Time: 2023-05-01
DOI: 10.12149/100749
CSTR: 11379.11.100749
According to the FAST data management policy, FAST Scientific Data Release 13 was published on 1st May 2023. The published scientific data include the observation data from Febuary the 1st, 2022 to April the 30th 2022. The observation programs and sources included during this period are shown in the tables below. If you need publicly available observation data, please contact the FAST data center（ fastdc@nao.cas.cn ）.
Publish Time: 2023-03-30
DOI: 10.12149/100716
CSTR: 11379.11.100716
LAMOST Data Release 10 V1.0 contains LAMOST mid/low resolution observations of the sky and catalog information from October 24, 2011 to June 30, 2022. A total of 5,923 plates were observed during the low resolution sky survey, and 11,817,430 spectra were obtained, including 11,473,644 stellar spectra, 263,444 galactic spectra, and 80,342 quasar spectra; It contains 7,478,650 records of atmospheric parameter information for A/F/G/K stars, 876,134 records of M-type stars and their parameter information, 680,989 records of A-type star parameter information, 17,140 of white dwarf star information, 556 of cataclysmic variable stars, 27,333 of galaxy constellation synthesis information, and 18,706 of quasar characteristic emission line information. A total of 10,486,216 spectra in 1,951 plates were obtained through mid-resolution sky surveys, including 2,211,338 non time domain spectra and 8,274,878 time domain spectra. Medium resolution star parameter catalog information 2,148,470 rows in total, including 1,103,320 rows for non-time domain observations and 1,045,150 rows for time-domain observations.
Publish Time: 2023-02-23
DOI: 10.12149/100695
CSTR: 11379.11.100695
The LAMOST Data Release 11 v0 Q1 released the spectral data obtained from October 7th, 2022 to December 28th, 2022, including low resolution spectrum and medium resolution spectrum. 155 plates were observed at low resolution and 188 at medium resolution. A total of 267,370 low-resolution spectra were released, including 259,890 stars, 6,125 galaxies and 1,355 quasars. It also includes a stellar parameter catalog containing 189,814 AFGK stars. Besides, a total of 722,994 medium-resolution coadd spectra, 2,596,336 medium-resolution single exposure spectra, as well as stellar parameters obtained from 227,117 medium-resolution coadd spectra were released.
Publish Time: 2023-02-10
DOI: 10.12149/100669
CSTR: 11379.11.100669
The AST3-2 2016 SN survey data observed in SDSS i-band, from March to May, in total of 4.5TB. The data covers 565 survey fields with ~ 2000 square degree. Each field has about 30 obs and covers 4.3 square degree. It contains 22,576 images, catalogue of 565 sky fields, and 7,702,085 light curves. The median limiting magnitude is ~ 17.8mag.
Publish Time: 2023-02-02
DOI: 10.12149/100674
CSTR: 11379.11.100674
LAMOST Data Release 9 V1.1 includes spectra and catalogs obtained by LAMOST low/medium resolution survey during October 24th 2011 and June 12th 2021. For the low resolution survey, there are 5,533 plates observed, and 11,211,028 spectra are obtained in total; there are 10,893,354 stellar spectra, 241,454 galaxy spectra, 76,220 quasar spectra. There are seven spectroscopic parameters catalogs, including the LAMOST LRS General Catalog, the LAMOST LRS A, F, G and K Type Star catalog, the LAMOST LRS A Type Star Catalog, the LAMOST LRS M Type Star Catalog, the LAMOST LRS Observed Plate Information Catalog, and the LAMOST LRS Input Catalog respectively. For the medium resolution survey, there are 8,259,362 spectra in 1,529 observation plates, among them 1,846,438 non time-domain spectra, 6,384,475 time-domain spectra. In addition, there are four catalogues: medium resolution general catalog, medium resolution parameter catalog, medium resolution observed plate information catalog, medium resolution multiple epoch catalog and medium resolution input catalog.
Publish Time: 2023-02-01
DOI: 10.12149/100693
CSTR: 11379.11.100693
According to the FAST data management policy, FAST Scientific Data Release 12 was published on 1st Febuary 2023. The published scientific data include the observation data from November the 1st, 2021 to January the 31st 2022. The observation programs and sources included during this period are shown in the tables below. If you need publicly available observation data, please contact the FAST data center（ fastdc@nao.cas.cn ）.
Publish Time: 2022-12-31
DOI: 10.12149/100735
CSTR: 11379.11.100735
CCSLR 2022 observation data, observation period from January 1, 2022 to December 31, 2022. Including 5 sub-datasets, e.g. geodetic satellite、GNSS satellite and more than 100 satellite projects, a total of 18 observations.
Publish Time: 2022-11-09
DOI: 10.12149/100658
CSTR: 11379.11.100658
This dataset contains 583851 processed spectra from LAMOST DR3. The training set and test test both made up of two parts: an index.csv contains a list of spectra id; and a zip file contains interpolated and sampled spectra in <id> .txt. The train_index.csv and test_answer also contains the classification of spectra. All the spectra has the same range of wavelength between 3800Å and 9000Å, with 2600 sampling point.
Publish Time: 2022-10-14
DOI: 10.12149/100657
CSTR: 11379.11.100657
According to the FAST data management policy, FAST Scientific Data Release 11 was published on 1st November 2022. The published scientific data include the observation data from August the 1st, 2021 to October the 31st 2021. The observation programs and sources included during this period are shown in the tables below. If you need publicly available observation data, please contact the FAST data center（ fastdc@nao.cas.cn ）.
Publish Time: 2022-09-30
DOI: 10.12149/100632
CSTR: 11379.11.100632
LAMOST Data Release 8 V2.0 includes spectra and catalogs obtained by LAMOST low/medium resolution survey during October 24th, 2011 and May 27th 2020. For the low resolution survey, there are 10,633,515 spectra obtained totally, including 10,336,752 stellar spectra, 224,752 galaxy spectra, 72,061 quasar spectra, and related catalogs published. For the medium resolution survey, there are totally 1,465,789 coadded spectra obtained by the non time-domain survey, and 4,510,193 single exposure spectra obtained by the time-domain survey, and related catalogs published. All data products are available from the website http://dr8.lamost.org/v2.0/.
Publish Time: 2022-08-24
DOI: 10.12149/100606
CSTR: 11379.21.100606
This set of star charts shows the whole starry skies visible in different seasons in the 40 ° north latitude region. The outer circle of the star map is marked with East, West, North and south directions. The innermost circle is the horizon of the observation site, and the center of the star map is the zenith of the observation site. When using, you can lift the star map so that the directions marked on the map are consistent with the actual directions. Then you can follow the map and learn to identify the constellations step by step starting from recognizing the bright stars. Stars brighter than 4 magnitude and a small number of stars with brightness of 5 magnitude are depicted in the figure. Bright stars are marked with Chinese star names. Some well-known deep space objects are also reflected.
Publish Time: 2022-08-01
DOI: 10.12149/100605
CSTR: 11379.11.100605
According to the FAST data management policy, FAST Scientific Data Release 10 was published on 1st August 2022. The published scientific data include the observation data from May the 1st, 2021 to July the 31st 2021. The observation programs and sources included during this period are shown in the tables below. If you need publicly available observation data, please contact the FAST data center（ fastdc@nao.cas.cn ）.
Publish Time: 2022-07-26
DOI: 10.12149/100594
CSTR: 11379.11.100594
LAMOST Data Release 10 v0 released spectra obtained between 2021-09-01 and 2022-06-30, including 594,239 low resolution spectra observed on 390 plates, there are 568,465 stellar、21,811 galaxy、3,963 QSO. And there is a catalog including spectral parameter of 409,880 AFGK stars. There are 5,482,648 single exposure medium resolution spectra and 1,584,896 coadd medium resolution spectra observed on the 422 plates. And stellar parameter catalog of 457,785 sources are provided using medium spectra.
Publish Time: 2022-07-26
DOI: 10.12149/100583
CSTR: 11379.11.100583
LAMOST Data Release 10 v0 Q3 released spectra obtained between 2022-04-01 and 2022-06-30, including 143,622 low resolution spectra observed on 86 plates, there are 137,117stellar、5,559 galaxy、946 QSO. And there is a catalog including spectral parameter of 103,169 AFGK stars. There are 1,493,619 single exposure medium resolution spectra and 360,482 coadd medium resolution spectra observed on the 91 plates. And stellar parameter catalog of 104,545 sources are provided using medium spectra.
Publish Time: 2022-06-13
Gaia space telescope is a very important project of the European Space Agency and is a follow-up project of the Hipparcos space telescope. It was launched in December 2013, arrived at the second Lagrange point of the Earth Moon system a few weeks later, and began a five-year sky survey mission in mid August 2014. Its main goal is to measure the three-dimensional space and three-dimensional velocity distribution of stars to determine their astrophysical properties, such as surface gravity and effective temperature, to describe and understand the formation, structure， history and evolution of the Milky Way. On 13 June 2022, Gaia Data Release 3(Gaia DR3) is released. The Gaia Early Data Release 3 (Gaia EDR3) released in October 2021 mainly contains the position, magnitude, proper motion and parallax of 1.5 billion stars, as well as the pseudo color information of some stars with poor photometric quality. Gaia DR3 neither contains new astrometry nor new photometric calibrations, thus, the photometry and astrometry data are common for DR3 and EDR3. However, DR3 has added more data on astrophysical parameters, such as spectral related parameter data, variable star list, and data on celestial bodies in the solar system. For the first time, there is data on the source of expansion (such as galaxies and quasars).
Publish Time: 2022-05-31
DOI: 10.12149/100550
CSTR: 11379.11.100550
LAMOST Data Release 10 v0 Q2 contains spectra obtained between 2022-01-01 and 2022-03-31, including 345,139 low resolution spectra observed on 205 plates, there are 329,701 stellar、13,110 galaxy、2,328 QSO. And there is a catalog including spectral parameter 241,258 AFGK stars. There are 2,092,459 single exposure medium resolution spectra and 603,810 coadded medium resolution spectra observed on the 150 plates.
Publish Time: 2022-05-30
DOI: 10.12149/100579
CSTR: 11379.11.100579
CCSLR 2021 observation data, observation period from January 1, 2021 to December 31, 2021. Including geodetic satellite, GNSS satellite and more than 100 satellite projects, a total of 18,970 observations.
Publish Time: 2022-05-27
DOI: 10.12149/100549
CSTR: 11379.21.100549
The second edition of ultra-high definition lunar surface map, with 450 million pixels, has 1268 lunar surface land place names marked, including 15 different types of landmarks, covering almost all lunar surface landmarks with observational value that can be seen by amateur telescopes, including 651 Crater, 348 Satellite Feature, 19 Oceanus, 17 Mare, 10 Sinus, 3 Palus, 9 Promontorium, 93 Rima, 8 Vallis, 43 Mons, and 36 Dorsums, 8 Rupes, 9 Catena, 1 Albedo Feature point and 13 Landing Site Names. If you have more opinions on the revision of land place names, please contact Liu Jing of Dongguan Science Museum or the National Astronomical Data Center.
Publish Time: 2022-05-01
DOI: 10.12149/100548
CSTR: 11379.11.100548
According to the FAST data management policy, the ninth batch of scientific data from FAST was released on May 1, 2022. The publicly available data includes scientific observation data from February 1, 2021 to April 30, 2021, including the observation project table and observation source table during this period. If you need publicly available observation data, please contact the FAST Data Center（ fastdc@nao.cas.cn ）Consultation.
Publish Time: 2022-04-18
The 2MASS All-Sky Data Release contains highly uniform near infrared Catalog and Image data covering 99.998% of the sky derived from observations made by the Survey's 1.3 m telescopes on Mt. Hopkins, Arizona and Cerro Tololo, Chile. The All-Sky Release data products include a Point Source Catalog (PSC) containing positions and photometry for 470,992,970 objects, a Scan Information Table (SCN) containing information common to the 59,731 Survey scans, an Extended Source Catalog (XSC) containing positions, photometry, and basic shape information for 1,647,599 spatially extended sources, most of which are galaxies, and an Image Atlas containing over 4,121,439 J, H, and Ks FITS images covering the sky. This mirror data set contains the Point Source Catalog, the Scan Information Table, and the Extended Source Catalog. The Atlas Images are not contained here, but are available via on-line the services of the Infrared Science Archive. Other details are in the readme files under the data download link.
Publish Time: 2022-03-31
DOI: 10.12149/100529
CSTR: 11379.11.100529
LAMOST Data Release 9 V1.0 includes spectra and catalogs obtained by LAMOST low/medium resolution survey during October 24th 2011 and June 12th 2021. For the low resolution survey, there are 5,533 plates observed, and 11,226,252 spectra are obtained in total; there are 10,907,516 stellar spectra, 242,569 galaxy spectra, 76,167 quasar spectra. For the medium resolution survey, there are 8,226,434 spectra in 1,529 observation plates, among them 1,841,959 non time-domain spectra, 6,384,475 time-domain spectra. In addition, there are dozens of catalogs list spectral parameters for the low/medium resolution survey respectively.
Publish Time: 2022-03-26
DOI: 10.12149/100528
CSTR: 11379.21.100528
Atlas of remote sensing images of Jilin-1 of world-famous observatories comprises 21 high resolution remote sensing images of the world-famous observatories taken by Jinlin-1 satellite when observing the Earth. Here are Xinglong Observation Site and Five-hundred-meter Aperture Spherical Radio Telescope in China; Nobeyama Radio Observatory NRO in Japan; RATAN-600 Radio Telescope in Russia; Effelsberg Radio Telescope in Germany; Royal Greenwich Observatory and Lovell Telescope in the United Kingdom; Gran Telescopio Canarias in Spain; Mauna Kea Observatory, Apache Point Observatory, Kitt Peak National Observatory, Laser Interferometer Gravitational-Wave Observatory, Arecibo Observator and Green Bank Telescope in the America. Very Large Array, European Extremely Large Telescope and Atacama Large Millimeter/submillimeter Array in Chille; Parkes Observatory in Australia; South African Astronomical Observatory; Square Kilometre Array(SKA) in Australia and South Africa. It is published by the Changguang Sateliite Technology Co. Ltd.
Publish Time: 2022-02-28
DOI: 10.12149/100517
CSTR: 11379.11.100517
LAMOST Data Release 10 v0 Q1 contains spectra obtained between 2021-01-01 and 2021-12-31, including 87,632 low resolution spectra observed on 99 plates, 2,256,570 single exposure medium resolution spectra and 620,604 coadded medium resolution spectra observed on the 181 plates.
Publish Time: 2022-02-28
DOI: 10.12149/100498
CSTR: 11379.11.100498
LAMOST Data Release 8 V1.1 includes spectra and catalogs obtained by LAMOST low/medium resolution survey during October 24th 2011 and May 25th 2020. For the low resolution survey, there are 5,207 plates observed, 10,351,254 stellar spectra, 225,475 galaxy spectra, 72,010 quasar spectra and 278,766 unknown object spectra. For the medium resolution survey, there are 5,975,982 spectra, among them 1,465,798 non time-domain spectra, 4,510,193 time-domain spectra. In addition, there are dozens of catalogs list spectral parameters for the low/medium resolution survey respectively.
Publish Time: 2022-02-01
DOI: 10.12149/100497
CSTR: 11379.11.100497
According to the FAST data management policy, the eighth batch of scientific data from FAST was released on February 1, 2022. The publicly available data is scientific observation data from November 1, 2020 to January 31, 2021. The list of project observation items and sources included during this period is detailed in the observation source table. If you need publicly available observation data, please contact the FAST Data Center（ fastdc@nao.cas.cn ）Consultation.
Publish Time: 2021-12-31
Focus on both black hole activity, and formation and evolution of galaxies, with the aim of creating a large data library that covers numerical simulation results, ranging from the small black hole accretion disk scale, up to the large scale of galaxy and galaxy cluster.
Publish Time: 2021-11-01
DOI: 10.12149/100496
CSTR: 11379.11.100496
According to the FAST data management policy, the seventh batch of scientific data from FAST was released on November 1, 2021. The publicly available data includes scientific observation data from August 1, 2020 to October 31, 2020, including a table of observation items and sources during this period. If you need publicly available observation data, please contact the FAST Data Center（ fastdc@nao.cas.cn ）Consultation.
Publish Time: 2021-09-30
DOI: 10.12149/100449
CSTR: 11379.11.100449
LAMOST Data Release 7 V2.0 includes spectra and catalogs obtained by LAMOST low/medium resolution survey during October 24th, 2011 and June 8th 2019. For the low resolution survey, there are 10,431,197 spectra obtained totally, including 9,846,793 stellar spectra, 198,272 galaxy spectra, 66,612 quasar spectra, and 319,520 unknown object spectra, and related catalogs published. For the medium resolution survey, there are totally 988,188 coadded spectra obtained by the non time-domain survey, and 2,828,655 single exposure spectra obtained by the time-domain survey, and related catalogs published. All data products are available from the website http://dr7.lamost.org/v2.0/.
Publish Time: 2021-08-15
DOI: 10.12149/100436
CSTR: 11379.11.100436
LAMOST Data Release 9, V0, contains spectra and catalogs obtained by LAMOST survey during September 18th, 2020 and June 14th, 2021, including Low Resolution Survey and Medium Resolution Survey. For the Low Resolution Survey, there are 326 plates observed during this period, including 539,137 spectra totally, with 492,068 star spectra (with SNR of g/r band greater than 10 spectra 468,703), 15,801 galaxy spectra, 3582 quasar spectra, 27,686 unknown object spectra respectively, and related catalogs. For the Medium Resolution survey, there are 440 plates observed during this period, including 6,054,085 single-epoch spectra and 1,724,868 co-added spectra, among them 2,846,395 and 1,050,637 spectra with SN greater than 10, and stellar parameter information for 446,907 co-added spectra.
Publish Time: 2021-08-15
DOI: 10.12149/100425
CSTR: 11379.11.100425
LAMOST Data Release 9 V0 Q3, contains spectra and catalogs obtained by LAMOST survey during April 1st and June 30th, 2021, including Low Resolution Survey and Medium Resolution Survey. For the Low Resolution survey, there are 57 plates observed during this period, including 86,793 spectra totally, with 76,481 star spectra (with SNR of g/r band greater than 10 spectra 72,007), 3387 galaxy spectra, 927 quasar spectra, 5998 unknown object spectra respectively, and related catalogs. For the Medium Resolution survey, there are 59 plates observed during this period, including 829,709 single-epoch spectra and 238,064 co-added spectra, among them 355,628 and 130,970 spectra with SN greater than 10, and stellar parameter information for 59,046 co-added spectra.
Publish Time: 2021-06-28
DOI: 10.12149/100417
CSTR: 11379.11.100417
Applying the revised M subdwarf classification criteria defined in Zhang et al to LAMOST DR7, combining the M subdwarf sample from Savcheva et al, a new M subdwarf sample containing 3131 objects with available atmospheric parameters was constructed for further study.
Publish Time: 2021-06-01
DOI: 10.12149/100448
CSTR: 11379.11.100448
LAMOST Data Release 5, covering ∼17,000 sq. deg from −10 to 80 deg in declination, contains 9 millions co-added low resolution spectra of celestial objects, each spectrum combined from repeat exposure of two to tens of times during Oct 2011 to Jun 2017. In this data release, the spectra of individual exposures for all the objects in LAMOST Data Release 5 are presented. For each spectrum, equivalent width of 60 lines from 11 different elements are calculated with a new method combining the actual line core and fitted line wings. For stars earlier than F type, the Balmer lines are fitted with both emission and absorption profiles once two components are detected. Radial velocity of each individual exposure is measured by minimizing χ2 between the spectrum and its best template. Database for equivalent widths of spectral lines and radial velocities of individual spectra are available online. For stars observed in the same day and with signal-to-noise ratio higher than 20, the radial velocity uncertainty is below 5km/s, and increase to 10km/s for stars observed in different nights.
Publish Time: 2021-06-01
DOI: 10.12149/100401
CSTR: 11379.11.100401
LAMOST Data Release 9 V0 Q2, contains spectra and catalogs obtained by LAMOST survey during January 1st and March 31st 2021, including Low Resolution Survey and Medium Resolution Survey. For the Low Resolution survey, there are 92 plates observed during this period, including 143,479 spectra totally, with 130,716 star spectra, 4159 galaxy spectra, 500 quasar spectra, 8104 unknown object spectra respectively, and related catalogs. For the Medium Resolution survey, there are 162 plates observed during this period, including 2,376,222 single-epoch spectra and 672,340 co-added spectra, among them 942,659 and 356,977 spectra with SN greater than 10, and related catalogs.
Publish Time: 2021-05-01
DOI: 10.12149/100400
CSTR: 11379.11.100400
According to the FAST data management policy, the fifth batch of scientific data from FAST was released on May 1, 2021. The released data includes scientific observation data from February 1, 2020 to April 30, 2020. The project information included during this period is detailed in the observation project table, and the source table is detailed in the observation source table. To obtain publicly available data, please contact the FAST Data Center（ fastdc@nao.cas.cn ）.
Publish Time: 2021-04-20
DOI: 10.12149/100381
CSTR: 11379.11.100381
LAMOST Data Release 7 V1.3 includes spectra and catalogs obtained by LAMOST low/medium resolution survey during October 24th 2011 and June 8th 2019. For the low resolution survey, there are 10,640,255 spectra obtained totally, including 9,881,260 stellar spectra, 198,393 galaxy spectra, 66,406 quasar spectra, and 494,196 unknown object spectra, and related catalogs published. For the medium resolution survey, there are totally 992,669 coadded spectra obtained by the non time-domain survey, and 2,861,575 single exposure spectra obtained by the time-domain survey, and related catalogs published. All data products are available from the website http://dr7.lamost.org/v1.3/.
Publish Time: 2021-03-31
DOI: 10.12149/100361
CSTR: 11379.11.100361
LAMOST Data Release 8 V1.0 includes spectra and catalogs obtained by LAMOST low/medium resolution survey during October 24th 2011 and May 25th 2020. For the low resolution survey, there are 5,207 plates observed, 10,388,423 stellar spectra, 219,776 galaxy spectra, 71,786 quasar spectra and 534,091 unknown object spectra. For the medium resolution survey, there are 6,038,218 spectra, among them 1,479,127 non time-domain spectra, 4,599,091 time-domain spectra. In addition, there are dozens of catalogs list spectral parameters for the low/medium resolution survey respectively.
Publish Time: 2021-02-22
DOI: 10.12149/100322
CSTR: 11379.11.100322
LAMOST Data Release 9 v0 Q1 contains spectra obtained between 2020-09-18 and 2020-12-31, including 308,865 low resolution spectra, 197,594 single exposure spectra and 809,539 coadded spectra obtained from the medium resolution spectral (MRS) commissioning survey.
Publish Time: 2021-02-01
DOI: 10.12149/100379
CSTR: 11379.11.100379
According to the FAST data management policy, the fourth batch of scientific data from FAST was released on February 1, 2021. The released data includes scientific observation data from November 1, 2019 to January 31, 2020. The project information included during this period is detailed in the observation project table, and the source table is detailed in the observation source table. To obtain publicly available data, please contact the FAST Data Center（ fastdc@nao.cas.cn ）
Publish Time: 2021-01-29
DOI: 10.12149/100321
CSTR: 11379.11.100321
Astronomical observation films are a precious heritage of astronomical observation research. With the support of the Special Key Project of the Ministry of Science and Technology on Basic Work of Science and Technology, the Shanghai Film Digitalization Laboratory completed the scanning and archiving of 29314 films in 2018. On this basis, the research team of the Shanghai Observatory conducted further high-precision astrometric calibration work on the digitized astronomical film, converting the initial version of the digital film into standard fits format astronomical digital images to meet the research needs of relevant professional astronomers. This data release includes 6615 high-quality astronomical digital films, with the main observation targets being extrasolar celestial bodies. After calculation, the celestial measurement accuracy reached 0.2 ". This batch of data includes observation data from multiple telescopes at five Chinese observatories, including the National Astronomical Observatory, Shanghai Astronomical Observatory, Purple Mountain Astronomical Observatory, Yunnan Astronomical Observatory, and Qingdao Astronomical Observatory, spanning from 1904 to 1998. In Mar 2024, Digitized Data of China Astronomical Plates: Image and Astrometric Catalog is accessible，it can totally subsistitude the early data release.
Publish Time: 2020-12-31
The data of spectral line observation of Tianma radio telescope.
Publish Time: 2020-12-28
DOI: 10.12149/100288
CSTR: 11379.11.100288
The LAMOST seventh Data Release V1.2 contains low resolution spectra obtained from October 24th 2011 to June 18th 2019, and medium resolution spectra obtained from September 2017 to June 2019. DR7v1.2 includes 4, 922 low resolution observation plates and 679 medium resolution observation plates. There are total 10,599,979 low resolution spectra, among them 8,819,957 with S/N> 10. There are 1.01 million non-time domain medium resolution spectral data, among them 670 thousands of spectra with S/N>10; and 2.87 million time domain medium resolution spectra, among them 1.60 million spectra with S/N>10. In addition, it also includes 10 low/medium resolution catalogs related with observations and parameters.
Publish Time: 2020-12-04
Gaia relies on the proven principles of ESA's Hipparcos mission to help solve one of the most difficult yet deeply fundamental challenges in modern astronomy: the creation of an extraordinarily precise three-dimensional map of about one billion stars throughout our Galaxy and beyond. This massive stellar census provides the basic observational data to tackle an enormous range of important problems related to the origin, structure, and evolutionary history of our Galaxy. The Gaia mission delivers an astronomical catalogue and data archive of unprecedented scope, accuracy and completeness. The Gaia satellite was launched at the end of 2013, this early third data release is based on observations spanning a period of 34 months (or 668 days). Gaia EDR3 represents a significant advance over Gaia DR2, with parallax precisions increased by 30 per cent, proper motion precisions increased by a factor of 2, and the systematic errors in the astrometry suppressed by 30–40% for the parallaxes and by a factor ∼2.5 for the proper motions. The photometry also features increased precision, but above all much better homogeneity across colour, magnitude, and celestial position. More information is available at https://www.cosmos.esa.int/web/gaia/dr3.
Publish Time: 2020-11-05
DOI: 10.12149/100378
CSTR: 11379.11.100378
According to the FAST data management policy, the third batch of scientific data from FAST was released on November 5, 2020. The released data includes scientific observation data from August 1, 2019 to October 31, 2019, including observation project tables and observation source tables during this period. To obtain publicly available data, please contact the FAST Data Center（ fastdc@nao.cas.cn ）.
Publish Time: 2020-10-20
DOI: 10.12149/100273
CSTR: 11379.11.100273
LAMOST Data Release 6 v2 contains totally obtain 9,911,337 spectra obtained from pilot survey which was launched in October 2011 and ended in June 2012, and the first six years of regular survey which was initiated on September 2012.
Publish Time: 2020-08-25
DOI: 10.12149/80055
CSTR: 11379.11.80055
Publish Time: 2020-08-11
DOI: 10.12149/100264
CSTR: 11379.11.100264
LAMOST Data Release 8 v0 contains spectra obtained between 2020-01-01 and 2020-03-31, including 230,469 low resolution spectra, 144,193 single exposure spectra and 791,982 coadded spectra obtained from the medium resolution spectral (MRS) commissioning survey.
Publish Time: 2020-08-11
DOI: 10.12149/100255
CSTR: 11379.11.100255
LAMOST Data Release 8 v0 Q3 contains spectra obtained between 2020-01-01 and 2020-03-31, including 230,469 low resolution spectra, 144,193 single exposure spectra and 791,982 coadded spectra obtained from the medium resolution spectral (MRS) commissioning survey.
Publish Time: 2020-08-05
DOI: 10.12149/100377
CSTR: 11379.11.100377
According to the FAST data management policy, the second batch of scientific data from FAST was released on August 5, 2020. The data released this time contained scientific observation data from May 1 to July 31, 2019. The project information included during this period is detailed in the observation project table, and the source table is detailed in the observation source table. To obtain publicly available data, please contact the FAST Data Center（ fastdc@nao.cas.cn ）.
Publish Time: 2020-07-27
DOI: 10.12149/80027
CSTR: 11379.99.80027
This translation includes the names of 811 Martian terrain features published to date (as of July 15, 2020) by the International Astronomical Union (IAU). It includes: the official names, the official English description of the IAU, the Chinese translation of the names, and a description of the Chinese translations. It provides references for relevant research and science education activities.
Publish Time: 2020-07-01
DOI: 10.12149/80028
CSTR: 11379.99.80028
Publish Time: 2020-07-01
DOI: 10.12149/80026
CSTR: 11379.99.80026
None
Publish Time: 2020-06-30
DOI: 10.12149/100424
CSTR: 11379.11.100424
The Gaia + PanSTARRS1 (PS1) + Sloan Digital Sky Survey (SDSS) + Two Micron All-Sky Survey (2MASS) (GPS1) catalog was released in 2017. It delivered precise proper motions for around 350 million sources down to a magnitude of r ~ 20 mag. In this release, the author presents GPS1+, the extension GPS1 catalog down to r ~ 22.5 mag, based on Gaia data release 2 (DR2), PS1, SDSS, and 2MASS astrometry. GPS1+ totally provides proper motions for ∼400 million sources with a characteristic systematic error of less than 0.1 mas yr−1. This catalog is divided into two subsamples, i.e., the primary and secondary parts. The primary ∼264 million sources have either or both Gaia and SDSS astrometry, with a typical precision of 2.0–5.0 mas yr−1. The secondary ∼136 million sources only have PS1 astrometry, where the average precision is worse than 15.0 mas yr−1. All the proper motions have been validated using QSOs and the existing Gaia proper motions.
Publish Time: 2020-06-16
DOI: 10.12149/100190
CSTR: 11379.11.100190
LAMOST Data Release 7 v1.1 contains totally obtain 10602012 spectra obtained from pilot survey which was launched in October 2011 and ended in June 2012, and the first seven years of regular survey which was initiated on September 2012.
Publish Time: 2020-06-16
DOI: 10.12149/100179
CSTR: 11379.11.100179
LAMOST Data Release 6 v1.1 contains totally obtain 9,912,702 spectra obtained from pilot survey which was launched in October 2011 and ended in June 2012, and the first six years of regular survey which was initiated on September 2012.
Publish Time: 2020-05-20
DOI: 10.12149/100201
CSTR: 11379.11.100201
LAMOST Data Release 8 v0 Q2 contains spectra obtained between 2020-01-01 and 2020-03-31, including 230,469 low resolution spectra, 144,193 single exposure spectra and 791,982 coadded spectra obtained from the medium resolution spectral (MRS) commissioning survey.
Publish Time: 2020-05-01
DOI: 10.12149/100376
CSTR: 11379.11.100376
According to the FAST data management policy, the 16th batch of scientific data from FAST was released on February 1, 2024. The data released this time is scientific observation data from November 1, 2022 to January 31, 2023. The project information included during this period is detailed in the observation project table, and the source table is detailed in the observation source table. If you want to access published observation data, please contact the FAST Data Center（ fastdc@nao.cas.cn）
Publish Time: 2020-04-01
DOI: 10.12149/100167
CSTR: 11379.11.100167
LAMOST Data Release 7 v1 contains totally obtain 10608416 spectra obtained from pilot survey which was launched in October 2011 and ended in June 2012, and the first seven years of regular survey which was initiated on September 2012. It also provides 1010666 single exposure spectra and 2878717 coadded spectra obtained from the medium resolution spectral (MRS) commissioning survey between September 2017 and June 2019.
Publish Time: 2020-02-20
DOI: 10.12149/100158
CSTR: 11379.11.100158
LAMOST Data Release 8 v0 contains spectra obtained between 2019-10-23 and 2019-12-31, including 165,997 low resolution spectra, 1,095,21 single exposure spectra and 638,759 coadded spectra obtained from the medium resolution spectral (MRS) commissioning survey.
Publish Time: 2020-01-31
The DESI Legacy Imaging Surveys (http://legacysurvey.org/) are a combination of three public projects (the Dark Energy Camera Legacy Survey, the Beijing–Arizona Sky Survey, and the Mayall z-band Legacy Survey) that will jointly image ≈14,000 sq. deg of the extragalactic sky visible from the northern hemisphere in three optical bands (g, r, and z) using telescopes at the Kitt Peak National Observatory and the Cerro Tololo Inter-American Observatory. The combined survey footprint is split into two contiguous areas by the Galactic plane. The optical imaging is conducted using a unique strategy of dynamically adjusting the exposure times and pointing selection during observing that results in a survey of nearly uniform depth. In addition to calibrated images, the project is delivering a catalog, constructed by using a probabilistic inference-based approach to estimate source shapes and brightnesses. The catalog includes photometry from the grz optical bands and from four mid-infrared bands (at 3.4, 4.6, 12, and 22 μm) observed by the Wide-field Infrared Survey Explorer satellite during its full operational lifetime. There are both catalog and image data.
Publish Time: 2019-10-10
DOI: 10.12149/100178
CSTR: 11379.21.100178
Publish Time: 2019-08-30
DOI: 10.12149/100027
CSTR: 11379.11.100027
The Beijing–Arizona Sky Survey (BASS) is a wide and deep imaging survey that covers a 5400 sq. deg area in the northern Galactic cap with the Bok 2.3m Telescope at Kitt Peak Station of Steward Observatory using two filters (g and r bands). The Mosaic z-band Legacy Survey (MzLS) covers the same area in the z band with the 4 m Mayall telescope. These two surveys will be used for spectroscopic targeting by the Dark Energy Spectroscopic Instrument (DESI) in the northernmost portion of the DESI footprint. This paper describes the third data release (DR3) of BASS, which contains the photometric data from all BASS and MzLS observations from 2015 January until the completion of BASS in 2019 March. The median astrometric precision relative to Gaia positions is about 17 mas and the median photometric offset relative to the Pan- STARRS1 photometry is within 5 mmag. The median 5σ AB magnitude depths for point sources are 24.2, 23.6, and 23.0 mag for the g, r, and z bands, respectively. The photometric depth within the survey area is highly homogeneous, and the difference between the 20% and 80% depth is less than 0.3 mag. The DR3 data, including raw data, calibrated single-epoch images, single-epoch photometric catalogs, stacked images, and co-added photometric catalogs.
Publish Time: 2019-07-31
DOI: 10.12149/100149
CSTR: 11379.11.100149
LAMOST Data Release 7 v0 contains spectra obtained between 2018-10-05 and 2019-06-30, including 558,412 low resolution spectra, 6,853,827 single exposure spectra and 1,670,813 coadded spectra obtained from the medium resolution spectral (MRS) commissioning survey.
Publish Time: 2019-07-31
DOI: 10.12149/100140
CSTR: 11379.11.100140
LAMOST Data Release 7 v0 Q3 contains spectra obtained between 2019-01-01 and 2019-03-31, including 72,342 low resolution spectra, 502,196 single exposure spectra and 131,452 coadded spectra obtained from the medium resolution spectral (MRS) commissioning survey.
Publish Time: 2019-06-30
DOI: 10.12149/100014
CSTR: 11379.11.100014
Antarctic AST3 Telescope Data Release 1 - obtained by the first AST3 telescope, AST3-1, equipped with a SDSS i filter, contains images processed from observational data of 14,460 regions in 2012, surveyed ~ 2000 deg^2 fields as well as the LMC and SMC, released 14,460 images, 16,165,061 targets and 1,972,054 light curves.
Publish Time: 2019-06-30
DOI: 10.12149/100013
CSTR: 11379.11.100013
LAMOST Data Release 5 V3 (DR5 V3) includes spectra from the LAMOST pilot and four years regular survey from October 24, 2011 to June 16, 2017, observing 4154 plates and releases a total of 9,026,365 spectra, including 5.34 million A, F, G and K type stars catalog.
Publish Time: 2019-05-21
DOI: 10.12149/100131
CSTR: 11379.11.100131
LAMOST Data Release 7 v0 Q2 contains spectra obtained between 2019-01-01 and 2019-03-31, including 236,479 low resolution spectra, 2,842,936 single exposure spectra and 675,050 coadded spectra obtained from the medium resolution spectral (MRS) commissioning survey.
Publish Time: 2019-04-01
DOI: 10.12149/100572
CSTR: 11379.11.100572
The calculation cycle of the atomic clock rate of Bureau International Des Poids etMesures is one month, and the rate calculation result corresponding to the Julian day of the previous month is published at the beginning of each month, and the unit is ns/day. Among them, the different numbers of the serial numbers of the clocks correspond to different types of clocks, among which 35- represents cesium atomic clocks and 4x- represents hydrogen atomic clocks, these two occupy the vast majority of clock types, and there are other clock types. NTSC gets atomic clock rate data through data dictionary
Publish Time: 2019-04-01
DOI: 10.12149/100571
CSTR: 11379.11.100571
Announcements of the value of DUT1=UT1-UTC to be transmitted with time signals with a precision of +/-0.1s.
Publish Time: 2019-04-01
DOI: 10.12149/100570
CSTR: 11379.11.100570
Announcement of leap seconds in UTC and information on UTC-TAI.
Publish Time: 2019-04-01
DOI: 10.12149/100569
CSTR: 11379.11.100569
IERS Bulletin B provides current information on the Earth's orientation in the IERS Reference System. This includes Universal Time, coordinates of the terrestrial pole, and celestial pole offsets,etc.
Publish Time: 2019-04-01
DOI: 10.12149/100568
CSTR: 11379.11.100568
IERS Bulletin A contains Earth orientation parameters x/y pole, UT1-UTC and their errors at daily intervals and predictions for 1 year into the future,etc.
Publish Time: 2019-04-01
DOI: 10.12149/100567
CSTR: 11379.11.100567
The time-frequency bulletin data mainly includes the time signal of the global positioning system (GPS) of the navigation satellite and other time difference data relative to the National Time Service Center Coordinated Universal Time System UTC (NTSC), the phase deviation between the local atomic time TA (NTSC) and UTC (NTSC), The final determination result of the earth's rotation parameters provided by IERS, and the correction number of the universal time number, the polar coordinates with JYD as the origin, etc.
Publish Time: 2019-04-01
DOI: 10.12149/100566
CSTR: 11379.11.100566
The weight of the atomic clock is a parameter in the calculation of the International Atomic Time and a sign to measure the long-term performance level of the atomic clock. Determining the weight of atomic clocks according to their performance can give full play to the advantages of atomic clocks with excellent performance. The calculation cycle of the BIPM atomic clock weight is one month, and the calculation result of the corresponding weight corresponding to the Julian day of the previous month is announced at the beginning of each month. NTSC gets atomic clock weight data through data dictionary.
Publish Time: 2019-03-31
DOI: 10.12149/100743
CSTR: 11379.11.100743
The atomic clock frequency drift calculation period of the BIPM atomic clock is one month. Theatomic clock frequency drift calculation results corresponding to the Julian days of the previous month are published at the beginning of each month, in ns/day/30days. Among them, the serial number of the clock corresponds to different types of clock. Among them, 35- represents cesium atomic clock and 4x- represents hydrogen atomic clock, which occupy the vast majority of the clock types. In addition, there are other clock types. The NTSC obtained the atomic clock frequency drift value of the atomic clock in the laboratory by matching the data dictionary.
Publish Time: 2019-03-27
DOI: 10.12149/100111
CSTR: 11379.11.100111
LAMOST Data Release 6 v1 contains totally obtain 9,919,106 spectra obtained from pilot survey which was launched in October 2011 and ended in June 2012, and the first six years of regular survey which was initiated on September 2012. It also provides 503,007 single exposure spectra and 841,282 coadded spectra obtained from the medium resolution spectral (MRS) commissioning survey between September 2017 and July 2018.
Publish Time: 2019-02-19
DOI: 10.12149/100122
CSTR: 11379.11.100122
LAMOST Data Release 7 v0 Q1 contains spectra obtained between 2018-10-05 and 2018-12-31, including 249,591 low resolution spectra, 503,007 single exposure spectra and 841,282 coadded spectra obtained from the medium resolution spectral (MRS) commissioning survey.
Publish Time: 2019-01-31
DOI: 10.12149/100036
CSTR: 11379.11.100036
The LAMOST Quasar Catalog provides 42567 quasars selected from LAMOST DR1- DR5 after the completion of LAMOST Phase-I (2012-2017) Regular Surveys. Full content and detailed description can be found in Ai et al. (2016), Dong et al. (2018) and Yao et al. (2019).
Publish Time: 2018-12-31
DOI: 10.12149/100012
CSTR: 11379.11.100012
LAMOST Data Release 5 V2 (DR5 V2) includes spectra from the LAMOST pilot and four years regular survey from October 24, 2011 to June 16, 2017, observing 4154 plates and releases a total of 9,027,634 spectra, including 4.53 million A, F, G and K type stars catalog.
Publish Time: 2018-07-20
DOI: 10.12149/100106
CSTR: 11379.11.100106
The LAMOST Data Release 6 V0 includes information of 739,006 spectra in 438 plates acquired between Sep. 1st, 2017 and May 18th 2018.
Publish Time: 2018-07-09
DOI: 10.12149/100101
CSTR: 11379.11.100101
The LAMOST Data Release 6 V0 Q3 include 108,580 spectra acquired between 2018-03-12 and 2018-05-18.
Publish Time: 2018-06-30
DOI: 10.12149/100009
CSTR: 11379.11.100009
LAMOST Data Release 4 V2 (DR4 V2 includes spectra from the LAMOST pilot and four years regular survey from October 24, 2011 to June 2, 2016, observing 3461 plates and releases a total of 7,620,612 spectra, including 4.53 million A, F, G and K type stars catalog.
Publish Time: 2018-04-30
The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since 2014 July. This release makes the data taken by SDSS-IV in its first two years of operation (2014–2016 July) public. Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. New in DR14 is the first public release of data from the extended Baryon Oscillation Spectroscopic Survey; the first data from the second phase of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2), including stellar parameter estimates from an innovative data-driven machine-learning algorithm known as “The Cannon”; and almost twice as many data cubes from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous release (N = 2812 in total). SDSS-IV is planning to continue to collect astronomical data until 2020 and will be followed by SDSS-V.
Publish Time: 2018-04-26
Gaia relies on the proven principles of ESA's Hipparcos mission to help solve one of the most difficult yet deeply fundamental challenges in modern astronomy: the creation of an extraordinarily precise three-dimensional map of about one billion stars throughout our Galaxy and beyond. This massive stellar census provides the basic observational data to tackle an enormous range of important problems related to the origin, structure, and evolutionary history of our Galaxy. The Gaia mission delivers an astronomical catalogue and data archive of unprecedented scope, accuracy and completeness. The Gaia satellite was launched at the end of 2013, this second data release is based on observations collected between 25 July 2014 and 23 May 2016, spanning a period of 22 months of data collection (or 668 days). This second data release, which represents a major advance with respect to Gaia DR1 in terms of completeness, performance, and richness of the data products， consisting of astrometry, photometry, radial velocities, and information on astrophysical parameters and variability, for sources brighter than magnitude 21. In addition epoch astrometry and photometry are provided for a modest sample of minor planets in the solar system. More information is available at https://www.cosmos.esa.int/web/gaia/dr2.
Publish Time: 2018-04-11
DOI: 10.12149/100096
CSTR: 11379.11.100096
This catalog totally published 427,226 targets observed between 2017-12-01 and 2018-02-28, including 389,689 stars, 11,755 galaxies, 3,185 quasars, and 22,597 unknown objects.
Publish Time: 2018-04-03
DOI: 10.12149/100304
CSTR: 11379.11.100304
After the Nanshan One meter Wide-field Telescope was installed in 2013 andthe detector upgrade and trial observations were completed in2014-2015, it was opened for scientific observation in 2016. Theprimary mirror of NOWT is parabolic, with an effective apertureof 1000 mm and a design effective field of view of 1.5◦×1.5◦.Equipped with Johnson, SDSS, and Strömgren filter systems commonly used for optical astronomical photometry, it can makeobservations of stellar types, parameters, metal abundances, etc. NOWT mainly focuses on optical time domain astronomy to carry out multicolor photometry, open cluster of stars observation, transient search and observation of small Solar System body. The data were generated in 2013 and released at the XAO Data Center on April 3, 2018.
Publish Time: 2018-01-15
DOI: 10.12149/100091
CSTR: 11379.11.100091
The LAMOST Data Release 6 V0 Q1 include 203,200 spectra acquired between 2018-09-01 and 2017-11-30.
Publish Time: 2017-12-31
DOI: 10.12149/100011
CSTR: 11379.11.100011
LAMOST Data Release 5 V1 (DR5 V1) includes spectra from the LAMOST pilot and four years regular survey from October 24, 2011 to June 16, 2017, observing 4154 plates and releases a total of 9,017,844 spectra, including 5.34 million A, F, G and K type stars catalog.
Publish Time: 2017-12-30
DOI: 10.12149/100023
CSTR: 11379.11.100023
The second data release (DR2) of the Beijing–Arizona Sky Survey (BASS), includes the observations through 2017 July obtained by BASS and by the Mayall z-band Legacy Survey (MzLS), which used the 4 m Mayall telescope to observe the same footprint. BASS and MzLS have completed 72% and 76% of their observations. The two surveys will be served for the spectroscopic targeting of the upcoming Dark Energy Spectroscopic Instrument. The DR2 data products include stacked images, co-added catalogs, and single-epoch images and catalogs.
Publish Time: 2017-10-23
The fourth United States Naval Observatory (USNO) CCD Astrograph Catalog, UCAC4, was released in 2012 August (double-sided DVD and CDS data center Vizier catalog I/322). It is the final release in this series and contains over 113 million objects; over 105 million of them with proper motions (PMs). UCAC4 is an updated version of UCAC3 with about the same number of stars also covering all-sky. Bugs were fixed, Schmidt plate survey data were avoided, and precise five-band photometry was added for about half the stars. Astrograph observations have been supplemented for bright stars by FK6, Hipparcos, and Tycho-2 data to compile a UCAC4 star catalog complete from the brightest stars to about magnitude R=16. Epoch 1998–2004 positions are obtained from observations with the 20 cm aperture USNO Astrograph’s “red lens,” equipped with a 4k by 4k CCD. Mean positions and PMs are derived by combining these observations with over 140 ground- and space-based catalogs, including Hipparcos/Tycho and the AC2000.2, as well as unpublished measures of over 5000 plates from other astrographs. For most of the faint stars in the southern hemisphere, the first epoch plates from the Southern Proper Motion program form the basis for PMs, while the Northern Proper Motion first epoch plates serve the same purpose for the rest of the sky. These data are supplemented by 2MASS near-IR photometry for about 110 million stars and five-band (B,V，g,r,i) APASS data for over 51 million stars. Thus the published UCAC4, as were UCAC3 and UCAC2, is a compiled catalog with the UCAC observational program being a major component. The positional accuracy of stars in UCAC4 at mean epoch is about 15–100 mas per coordinate, depending on magnitude, while the formal errors in PMs range from about 1 to 10 mas/yr depending on magnitude and observing history. Systematic errors in PMs are estimated to be about 1–4 mas/yr
Publish Time: 2017-09-20
New astrometric reductions of the US Naval Observatory CCD Astrograph Catalog (UCAC) all-sky observations were performed from first principles using the TGAS stars in the 8–11 mag range as the reference star catalog. Significant improvements in the astrometric solutions were obtained, and the UCAC5 catalog of mean positions at a mean epoch near 2001 was generated. By combining UCAC5 with Gaia DR1 data, new proper motions were obtained for over 107 million stars on the Gaia coordinate system, with typical accuracies of 1–2 mas/yr (R=11–15 mag) and about 5 mas/yr at 16th mag. Proper motions of most TGAS stars are improved over their Gaia data and the precision level of TGAS proper motions is extended to many millions more, fainter stars. External comparisons were made using stellar cluster fields and extragalactic sources. The TGAS data allow us to derive the limiting precision of the UCAC x, y data, which is significantly better than 1/100 pixel.
Publish Time: 2017-01-30
DOI: 10.12149/100020
CSTR: 11379.11.100020
The Beijing-Arizona Sky Survey (BASS) is a wide-field two-band photometric survey of the northern Galactic Cap (5400 sq. deg) using the 90Prime imager on the Bok 2.3m Telescope at Kitt Peak Station of Steward Observatory. It is a four-year collaboration between the National Astronomical Observatory of China and Steward Observatory, the University of Arizona, serving as one of the three imaging surveys to provide photometric input catalogs for target selection of the Dark Energy Spectroscopic Instrument (DESI) project. This is the First Data Release of BASS obtained by Bok telescope from January 2015 to July 2016, contains single-epoch images, single-epoch catalogs, and co-added catalogs. About 41% of the whole survey has been completed.
Publish Time: 2017-01-10
Gaia relies on the proven principles of ESA's Hipparcos mission to help solve one of the most difficult yet deeply fundamental challenges in modern astronomy: the creation of an extraordinarily precise three-dimensional map of about one billion stars throughout our Galaxy and beyond. This massive stellar census provides the basic observational data to tackle an enormous range of important problems related to the origin, structure, and evolutionary history of our Galaxy. The Gaia mission delivers an astronomical catalogue and data archive of unprecedented scope, accuracy and completeness. The Gaia satellite was launched at the end of 2013, this release contains the data collected by Gaia during the first 14 months, including astrometry and photometry for over 1 billion sources brighter than G magnitude 20.7.
Publish Time: 2016-12-31
DOI: 10.12149/100008
CSTR: 11379.11.100008
LAMOST Data Release 4 V1 (DR4 V1) includes spectra from the LAMOST pilot and four years regular survey from October 24, 2011 to June 2, 2016, observing 3459 plates and releases a total of 7,661,651 spectra, including 4.33 million A, F, G and K type stars catalog.
Publish Time: 2016-12-20
The Panoramic Survey Telescope and Rapid Response System (Pan-STARRS) is a system for wide-field astronomical imaging developed and operated by the Institute for Astronomy at the University of Hawaii. Pan-STARRS1 (PS1) is the first part of Pan-STARRS and is the basis for Data Release 1 (DR1). The PS1 survey used a 1.8m telescope and its 1.4 Gigapixel camera (GPC1) to image the sky in five broadband filters (g, r, i, z, y). PS1 took approximately 370000 exposures from 2010 to 2015. Data for this catalog has been retrieved from the Mikulski Archive for Space Telescopes (MAST) at STScI.
Publish Time: 2016-06-30
DOI: 10.12149/100044
CSTR: 11379.11.100044
The Lijiang 2.4m optical telescope of Yunnan Observatory was installed at Lijiang Observatory in the northwest of the Yunnan Province in 2007. Lijiang 2.4m Telescope Data contains raw observational data since september 2010.
Publish Time: 2016-06-30
DOI: 10.12149/100042
CSTR: 11379.11.100042
The 1m New Vacuum Solar Telescope hosted by the Fuxian Solar Observatory, is situated on the shores of Fuxian Lake, at latitude 24 34 48N, longitude 102 57 01E. The station is a subsidiary of Yunnan Observatories. The 1m New Vacuum Solar Telescope Data - Level 1.5 provides processed level 1.5 data.
Publish Time: 2016-06-30
DOI: 10.12149/100040
CSTR: 11379.11.100040
HSOS Solar Multi-Channel Telescope located at Huairou Solar Observing Station is a unique video magnetograph in the world that can simultaneously measure the solar 2-dimension magnetic field and velocity field with different spectral lines. The HSOS Solar Multi-Channel Telescope Data contains observation data since 1997.
Publish Time: 2016-06-30
DOI: 10.12149/100039
CSTR: 11379.11.100039
The Solar Broadband Radio Spectrometer (SBRS) located in Huairou Solar Observing Station mainly records the characteristics of the dynamic spectrum of radio radiation in the sun's atmosphere changing over time. The HSOS Solar Broad Band Spectrometer Data contains observation data since 1994.
Publish Time: 2016-02-20
DOI: 10.12149/100032
CSTR: 11379.11.100032
The South Galactic Cap u-band Sky Survey (SCUSS) is a deep u-band imaging survey in the south Galactic cap using the Bok 2.3m Telescope at Kitt Peak Station of Steward Observatory. The survey observations were completed at the end of 2013, covering an area of about 5000 square degrees. We release the data in the region with an area of about 4000 deg2 that is mostly covered by the Sloan digital sky survey. The data products contain calibrated single-epoch images, stacked images, photometric catalogs, and a catalog of star proper motions derived by Peng et al. The median seeing and magnitude limit (5σ) are about 2.0” and 23.2 mag, respectively. There are about 8 million objects having measurements of absolute proper motions. All the data and related documentations can be accessed through the SCUSS data release website http://batc.bao.ac.cn/Uband/data.html and the National Astronomical Data Center website https://nadc.china-vo.org.
Publish Time: 2015-12-30
DOI: 10.12149/100018
CSTR: 11379.11.100018
The Beijing-Arizona Sky Survey (BASS) is a wide-field two-band photometric survey of the northern Galactic Cap using the 90Prime imager on theBok 2.3m Telescope at Kitt Peak Station of Steward Observatory. It is a four-year collaboration between the National Astronomical Observatory of China and Steward Observatory, the University of Arizona, serving as one of the three imaging surveys to provide photometric input catalogs for target selection of the Dark Energy Spectroscopic Instrument (DESI) project. This is the early data release of BASS obtained by Bok telescope from January to July in 2015, contains single-epoch images, single-epoch catalogs and co-added catalogs.
Publish Time: 2015-12-15
DOI: 10.12149/100005
CSTR: 11379.11.100005
LAMOST Data Release 3 (DR3) includes spectra from the LAMOST pilot and three years regular survey from October 24, 2011 to May 30, 2015, observing 2667 plates and obtaining 4,664,048 star spectra with a signal-to-noise ratio greater than 10. DR3 releases a total of 5,755,126 spectra, including 3.17 million A, F, G and K type stars catalog.
Publish Time: 2015-07-31
Data Release 12 (DR12) is the final release of the Sloan Digital Sky Survey III. DR12 contains all data taken by all phases of the SDSS through 14 July 2014. SDSS-III took data from 2008 to 2014 using the original SDSS wide-field imager, the original and an upgraded multi-object fiber-fed optical spectrograph, a new near- infrared high-resolution spectrograph, and a novel optical interferometer. All of the data from SDSS-III are now made public. Relative to our previous public release (DR10), DR12 adds one million new spectra of galaxies and quasars from the Baryon Oscillation Spectroscopic Survey (BOSS) over an additional 3000 deg^2 of sky, more than triples the number of H-band spectra of stars as part of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE), and includes repeated accurate radial velocity measurements of 5500 stars from the Multi-object APO Radial Velocity Exoplanet Large-area Survey (MARVELS). The APOGEE outputs now include the measured abundances of 15 different elements for each star. In total, SDSS-III added 5200 deg^2 of ugriz imaging; 155,520 spectra of 138,099 stars as part of the Sloan Exploration of Galactic Understanding and Evolution 2 (SEGUE-2) survey; 2,497,484 BOSS spectra of 1,372,737 galaxies, 294,512 quasars, and 247,216 stars over 9376 deg^2; 618,080 APOGEE spectra of 156,593 stars; and 197,040 MARVELS spectra of 5513 stars. Since its first light in 1998, SDSS has imaged over 1/3 of the Celestial sphere in five bands and obtained over five million astronomical spectra.
Publish Time: 2014-12-30
DOI: 10.12149/100003
CSTR: 11379.11.100003
LAMOST Data Release 2 (DR2) includes spectra from the LAMOST pilot and two years regular survey from October 24, 2011 to June 5, 2014, observing 1934 plates and obtaining 3,274,369 star spectra with a signal-to-noise ratio greater than 10. DR2 releases a total of 4,132,782 spectra, including 2.2 million A, F, G and K type stars catalog.
Publish Time: 2014-07-30
DOI: 10.12149/100301
CSTR: 11379.11.100301
The Multi-channel near infrared solar spectrometer (miss),which was built in the 1970 s, after the 80 s and 90 s, in 2015 (the latest upgrade) in this century, now developed into five wavebands (Hα 6563 Å、 Ca II 8498Å、 8542Å、 8662Å and He I 10830Å) high space-time high spectral resolution of two-dimensional spectral information and high space-time resolution Hα monochrome image data.
Publish Time: 2014-06-06
DOI: 10.12149/100303
CSTR: 11379.11.100303
Nanshan 25m radio telescope is a modified Cassegrain antenna, which was built andput into use in 1993. It is a member of the European VeryLong Baseline Interference Network, the International DynamicGeodetic Network, the Russian Low-Frequency VLBI Network, andthe East Asian VLBI Network. It mainly conducts surveys andmonitoring of pulsars, active galactic nuclei (AGN), molecularlines, and IDV sources and supports galactic plane magnetic fieldsurveys and Jupiter studies. The data set of NSRT includes pulsars, molecular lines and intra-day vairibility observations. Since January 2010, nanshan 25m radio telescope has made observations of nearly 300 pulsars using an 18-cm refrigerating receiver and DFB system. DFB data was generated in 2010, and the raw data of DFB is about 20TB per year. The data release system was releazed in 2014.
Publish Time: 2013-11-12
The AllWISE Source Catalog contains astrometry and photometry for 747,634,026 objects detected on the deep AllWISE Atlas Intensity Images. Positions, magnitudes, astrometric and photometric uncertainties, flags indicating the reliability and quality of the source characterizations, and associations with the 2MASS Point and Extended Source Catalog sources are presented for each source. New to the AllWISE Source Catalog are measurements of the apparent motion of each source that exploit the two independent WISE sky coverage epochs.
The AllWISE Source Catalog is superior to the WISE All-Sky Release Catalog and should be your primary reference for discrete objects in the mid-IR sky, with the one exception described below. The AllWISE Catalog sensitivity is better in the W1 and W2 bands because of increased depth-of-coverage provided by the coaddition of data from the 4-Band, 3-Band and Post-Cryo survey phases. The photometric accuracy in all four bands is improved because faint source flux biases have been corrected and background estimation has been made more robust. Astrometry accuracy is better because of the correction for the proper motion of 2MASS astrometric reference stars in the 11 years between the two surveys, and the incorporation of the multiple independent source measurements in the image overlap regions into the astrometric solutions. Measurements of the apparent motion of sources are provided for the first time, and improved source flux variability metrics have been computed.
The WISE All-Sky Source Catalog provides better photometry for sources brighter than the saturation limit in bands W1 and W2, W1<8 mag and W2<7 mag, that were observed during the Post-Cryo survey phase. Saturated source photometry during the Post-Cryo phase is systematically biased with the respect to that in the other phases, when they were combined in for AllWISE the resulting measurements have larger net uncertainties. The All-Sky Catalog that is limited to data from the 4-Band Cryo phase does not suffer from this bias.
Publish Time: 2013-08-26
DOI: 10.12149/100001
CSTR: 11379.11.100001
LAMOST Data Release 1 (DR1) includes spectra from the LAMOST pilot and first-year regular survey from October 24, 2011 to June 15, 2013. The LAMOST pilot survey began on October 24, 2011 and ended on June 24, 2012, observing 401 plates and obtaining 547,868 star spectra with a signal-to-noise ratio greater than 10 and 373,481 A, F, G and K type stars catalog. The LAMOST first-year regular survey conducted from September 28, 2012 to June 15, 2013, observing 689 plates and obtaining 1,173,928 star spectra with a signal-to-noise ratio greater than 10 and a atalog of 711,923 A, F, G and K type stars. DR1 releases a total of 2.2 million spectra, including 1.08 million A, F, G and K type stars catalog.
Publish Time: 2012-10-30
DOI: 10.12149/100302
CSTR: 11379.11.100302
The Gan Yu Fine Structure Telescope, with a 26cm aperture, is specifically designed for observing the solar chromosphere at a wavelength of 656.3 nanometers. It enables rapid imaging of the active regions of the Sun, making it a valuable tool for studying the triggering and energy release of solar flares, as well as the fine processes of dark filament eruptions and chromospheric surges. The recorded data spans from 2008 to June 2021, during which a total of 24 C class solar flares were observed, including 12 major flares of M class or higher .
Publish Time: 2012-04-02
NASA's Wide-field Infrared Survey Explorer (WISE; Wright et al. 2010) mapped the sky at 3.4, 4.6, 12, and 22 μm (W1, W2, W3, W4) in 2010 with an angular resolution of 6.1", 6.4", 6.5", & 12.0" in the four bands. WISE achieved 5σ point source sensitivities better than 0.08, 0.11, 1 and 6 mJy in unconfused regions on the ecliptic in the four bands. Sensitivity improves toward the ecliptic poles due to denser coverage and lower zodiacal background.
The All-Sky Release includes all data taken during the WISE full cryogenic mission phase, 7 January 2010 to 6 August 2010, that were processed with improved calibrations and reduction algorithms. Release data products include an Atlas of 18,240 match-filtered, calibrated and coadded image sets, a Source Catalog containing positional and photometric information for over 563 million objects detected on the WISE images, and an Explanatory Supplement that is a guide to the format, content, characteristics and cautionary notes for the WISE All-Sky Release products. The WISE All-Sky Data Release products supersede those from the April 2011 Preliminary Data Release.
All-Sky Release ancillary products include a Reject Table containing 284 million detections that were not selected for inclusion in the Source Catalog because they are low signal-to-noise ratio or spurious detections of image artifacts, an archive of over 1.5 million Single-exposure Image sets and a database of over 9.4 billion source extractions from those images, and moving object tracklets identified as part of the NEOWISE program (Mainzer et al. 2011). Here we only provide catalog data.
Publish Time: 2011-09-01
DOI: 10.12149/100413
CSTR: 11379.11.100413
There are three types of observed data produced by the 13.7-meter millimeter-wave radio telescope. The first type is observed in the single-point observation mode according to the requirements of the observer. Each spectral line contains one Fits file, and one record in the database table corresponds to the header information of one file.A total of 3.06 million spectral lines have been observed since 2003.The second method is to use OTF observation mode to observe data as required by the observer. and two fits cube files are generated after averaging the scan results of the same area mapped every day, with one record in the database corresponding to the header information of that two file. The scan area ranges from 10′ × 10′ to 30′ × 30′, and more than 5,900 areas have been observed since 2011.The third is Milky Way Imaging Scroll Painting (MWISP), The Purple Mountain Observatory (PMO) of the Chinese Academy of Sciences has organized MWISP project since November 2011. The 13.7m millimeter wave telescope of the Qinghai Station of PMO has been used to simultaneously observe the three molecular spectral lines of CO(J=1-0) and its isotopes 13CO/C18O(J=1-0) near the galactic plane of the North sky. The first phase of the survey, which has lasted for 10 years, has been completed at the end of April 2021, covering a total of 2,400 square degrees 0°≤ l≤ 240°,|b|≤ 5°, and establishing the Millimeter Wave Radio Astronomy Database. After the discussion of the MWISP survey working group, it was decided to continue the second phase of the MWISP survey and extend the survey area to |b|<10°. This survey will help to expand scientific objectives and provide a wider range of molecular gas distribution data for multi-band astronomical research. The second phase of the survey has begun on September 1, 2021 and is expected to last the next ten years.
Publish Time: 2010-04-25
The third US Naval Observatory (USNO) CCD Astrograph Catalog, UCAC3 was released at the IAU General Assembly on 2009 August 10. It is the first all-sky release in this series and contains just over 100 million objects, about 95 million of them with proper motions, covering about R = 8 to 16 magnitudes. Current epoch positions are obtained from the observations with the 20 cm aperture USNO Astrograph’s “red lens”, equipped with a 4k by 4k CCD. Proper motions are derived by combining these observations with over 140 ground- and space-based catalogs, including Hipparcos/Tycho and the AC2000.2, as well as unpublished measures of over 5000 plates from other astrographs. For most of the faint stars in the Southern Hemisphere the Yale/San Juan first epoch plates from the SPM program (YSJ1) form the basis for proper motions. These data are supplemented by all-sky Schmidt plate survey astrometry and photometry obtained from the SuperCOSMOS project, as well as 2MASS near-IR photometry. Major differences of UCAC3 data as compared to UCAC2 include a completely new raw data eduction with improved control over systematic errors in positions, significantly improved photometry, slightly deeper limiting magnitude, coverage of the north pole region, greater completeness by inclusion of double stars and weak detections. This of course leads to a catalog which is not as “clean” as UCAC2 and problem areas are outlined for the user in UCAC3 publishing paper in Zacharias et al 2010. The positional accuracy of stars in UCAC3 is about 15 to 100 mas per coordinate, depending on magnitude, while the errors in proper motions range from 1 to 10 mas/yr depending on magnitude and observing history, with a significant improvement over UCAC2 achieved due to the re-reduced SPM data and inclusion of more astrograph plate data unavailable at the time of UCAC2.
Publish Time: 2010-03-30
DOI: 10.12149/100038
CSTR: 11379.11.100038
The Chinese Small Telescope ARray (CSTAR) is deployed at Dome A in 2008 January by the twenty-fourth Chinese expedition team. CSTAR consists four 14.5cm optical telescopes, each with a different filter (g, r, i and open) and has a 4.5x4.5 sq. degree FOV. In 2008, CSTAR 1 performed almost flawlessly, acquiring more than 0.3 million i-band images for a total integration time of 1728 hr during 158 days of observations. CSTAR has a fixed pointing centered on the south celestial pole, all the sources were monitored continuously for several months. This first release contains 21845 light curve derived from its observation data in 2008.
Publish Time: 2006-10-13
The second US Naval Observatory (USNO) CCD Astrograph Catalog, UCAC2 was released in 2003 July. Positions and proper motions for 48,330,571 sources mostly stars) are available on 3 CDs, supplemented with Two Micron All Sky Survey photometry for 99.5% of the sources. The catalog covers the sky area from
-90° to +40° declination, going up to +52° in some areas; this completely supersedes the UCAC1 released in 2001. Current epoch positions are obtained from observations with the USNO 8 inch (0.2 m) Twin Astrograph equipped with a 4K CCD camera. The precision of the positions are 15–70 mas, depending on magnitude, with estimated systematic errors of 10 mas or below. Proper motions are derived by using over 140 ground- and spacebased catalogs, including Hipparcos/Tycho and the AC2000.2, as well as yet unpublished remeasures of the AGK2 plates and scans from the NPM and SPM plates. Proper-motion errors are about 1–3 mas/yr for stars to 12th magnitude, and about 4–7 mas yr1 for fainter stars to 16th magnitude.
Publish Time: 2004-11-30
The USNO CCD Astrograph (UCA) started an astrometric survey in 1998 February at Cerro Tololo, Chile. This Ðrst, preliminary catalog (UCAC1) includes data taken up to 1999 November with about 80% of the Southern Hemisphere covered. Observing continues, and full sky coverage is expected by mid-2003 after moving the instrument to a Northern Hemisphere site in early 2001. The survey is performed in a single bandpass (579-642 nm), a twofold overlap pattern of Ðelds, and with a long and a short exposure on each field. Stars in the magnitude range 10-14 have positional precisions of <=20 mas. At the limiting magnitude of RB 16 mag, the positional precision is 70 mas. The UCAC aims at a density (stars per square degree) larger than that of the Guide Star Catalog (GSC) with a positional accuracy similar to Tycho. The UCAC program is a major step toward a high-precision densiÐcation of the optical reference frame in the post Hipparcos era, and the first stage, the UCAC1 contains over 27million stars. Preliminary proper motions are included, which were derived from Tycho-2, Hipparcos, and ground-based transit circle and photographic surveys for the bright stars (V <=12.5 mag) and the USNO A2.0 for the fainter stars. The accuracy of the proper motions varies widely, from 1 to over 15 mas yr~1.