***Project Overview***

This project provides a customized multi-band standard star catalog (DOT_standard_star_catalog.fits) specifically generated for the Shanghai Astronomy Museum's 1-meter telescope (referred to in this project as DOT).Its primary purpose is to provide a high-precision photometric calibration reference for CCD images acquired under conditions of significant urban light pollution, such as those from the Lingang, Shanghai observation site.

The catalog is based on Gaia DR3 data (all-sky stars brighter than G=12) and their corresponding XP spectra. The instrumental magnitudes were calculated using synthetic photometry (synthetic_photometric.py) by convolving the Gaia spectra with the DOT's specific filter response curves (DOT_filters.zip).

***File List and Description***

- DOT_standard_star_catalog.fits
  File Size: 320.05 MB
  Description: This is the final standard star catalog in FITS format. It contains the selected Gaia DR3 stars (all-sky, G < 12) and provides the calculated instrumental AB magnitude for each star in all 7 of the telescope's filter channels.Usage: Intended for direct use as the photometric calibration reference in the astronomical data processing pipeline.

- DOT_filters.zip
  File Size: 42.39 kB
  Description: A zip archive containing the total system response curves ($R(\lambda)$) for the 7 filter channels of the DOT. These curves are a necessary input for the synthetic photometry calculation.Usage: Required by the synthetic_photometric.py script.

- synthetic_photometric.py
  File Size: 1.58 kB
  Description: The Python script used to perform synthetic photometry.Function: This script reads the Gaia XP spectral data and the filter curves from DOT_filters.zip. It then calculates the instrumental AB magnitude for each star in each filter to generate the final DOT_standard_star_catalog.fits file.