Query Beijing-Arizona Sky Survey DR2 Images

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Position Constraints

Rectangle min ra dec (max 10 square degrees)
max ra dec
Cone center ra dec radiusarcsec
solve name:
Proximity list of ra,dec[,radius] (max 100 obj)
 Default radius
arcsec
or Upload File (Sample)
None No position constraint
 

Output

Format:
 

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column		 name value sample description
minmax
fitsname /line16/BASS_NAOC/20160401/p7480r0213_1.fits.fz FITS filename
dateobs 2016-04-02 10:32:56.414000 UT date of observation
ccd 1 CCD number
object 06711 Object name
filter r Filter name
exptime 65.2 Exposure time
airmass 1.018 Airmass of the observation
gain 1.515 Average gain for the CCD
saturate 920.245 Saturated value
rdnoise 7.295 Readout noise
nx 4096 Number of pixel in x axis
ny 4032 Number of pixel in x axis
pixscale 0.45273 Pixel scale at the center of the focal plane
ra_lb 251.022529198 R.A. in J2000 for the center of the CCD image
dec_lb 34.0028493828 Decl. in J2000 for the center of the CCD image
ra_lt 251.028719025 R.A. in J2000 for the center of the CCD image
dec_lt 34.5080662461 Decl. in J2000 for the center of the CCD image
ra_rt 250.405885123 R.A. in J2000 for the center of the CCD image
dec_rt 34.5160351805 Decl. in J2000 for the center of the CCD image
ra_rb 250.400979431 R.A. in J2000 for the center of the CCD image
dec_rb 34.0086738702 Decl. in J2000 for the center of the CCD image
ra 250.715872684 R.A. in J2000 for the center of the CCD image
dec 34.2602145397 Decl. in J2000 for the center of the CCD image
sky 12.968 Sky background in flux counts
skyrms 0.484 Sky background RMS in flux counts
skyb 21.3027 Sky brightness
seeing 2.2899 Dome seeing in FWHM
ref_aper 13.0 Aperture radius for zeropoint calculation
ccdzpt 25.8028 External zeropoint derived with Panstarrs DR1 catalog
zptrms 0.032 Combined zeropoint RMS
nmatch 530 Number of stars used for calculating external zeropoint
ccdzpta 25.8067 External zeropoint for A amplifier derived with Panstarrs DR1 catalog
zptrmsa 0.0313 Combined zeropoint RMS
nmatcha 121 Number of stars used for calculating external zeropoint for A amplifier
ccdzptb 25.7839 External zeropoint for B amplifier derived with Panstarrs DR1 catalog
zptrmsb 0.0211 Combined zeropoint RMS
nmatchb 139 Number of stars used for calculating external zeropoint for B amplifier
ccdzptc 25.8205 External zeropoint for C amplifier derived with Panstarrs DR1 catalog
zptrmsc 0.0235 Combined zeropoint RMS
nmatchc 137 Number of stars used for calculating external zeropoint for C amplifier
ccdzptd 25.8003 External zeropoint for D amplifier derived with Panstarrs DR1 catalog
zptrmsd 0.0296 Combined zeropoint RMS
nmatchd 133 Number of stars used for calculating external zeropoint for D amplifier
int_zpt 25.8057 Internal zeropoint for each CCD
int_rms 0.0376919 Internal zeropoint RMS for each CCD
int_num 687 Number of stars used for calculate the internal zeropoint
zp 25.8057 Combined zeropoint
zp_rms 0.0376919 Combined zeropoint RMS
zp_num 687 Number stars for combined zeropoint
ra_off -0.000480604 R.A. offset relative to the reference catalog
dec_off 0.000207712 Decl. offset relative to the reference catalog
ra_rms 0.0199793 R.A. RMS relative to the reference catalog
dec_rms 0.0454383 Decl. RMS relative to the reference catalog
astr_num 1351 Number of stars used for statistics of astrometric parameters
astr_ref GAIA-DR1 Reference catalog for astrometry
astraerr 0.0177323622517 SCAMP R.A. RMS if existing
astdecerr 0.0189916451601 SCAMP Decl. RMS if existing
depth_point 22.6927 Depth for 5σ point sources
depth_extend 22.5823 Depth for 5σ extended sources
extension 0 Image extension for the FITS image
mjd 57480.43954 Modified Julian day (-2400000)
imq 1 Image quality; 1 used for stacked image
ebv 0.0216769 Galactic extinction from SFD98 map
survey bass Survey name
pass 1 Observation pass; 1 for Pass 1; 2 for Pass 2; and 3 for Pass 3
transparency 0.975869 Transparency calculated from the zeropoint
sunra 12.0671006846 R.A. in J2000 of the Sun
sundec 5.17586966438 Decl. in J2000 of the Sun
sunalt -32.7841157141 Altitude of the Sun
sunaz 58.0858889661 Azimuth of the Sun
moonra 307.176582275 R.A. in J2000 of the Moon
moondec -15.862167556 Decl. in J2000 of the Moon
moonalt 8.33221863171 Altitude of the Moon
moonaz 114.575036799 Azimuth of the Moon