Upgraded photometric system on the 85-cm telescope at Xinglong station

The 85-cm telescope at Xinglong station is a prime focus system that operates well with high science outputs. The telescope has been upgraded since 2014 with a new corrector, and new filters and camera, which are provided by Beijing Normal University. The filter set is the Johnson-Cousins UBVRI syst...

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Bibliographic Details
Published in:Research in astronomy and astrophysics 2018-08, Vol.18 (9), p.107
Main Authors: Bai, Chun-Hai, Fu, Jian-Ning, Li, Tao-Ran, Fan, Zhou, Wu, Jiang-Hua, Zhao, Yong, Zeng, Xian-Qun, Zhang, Wen-Zhao, Qiu, Peng, Feng, Guo-Jie, Jiang, Xiao-Jun
Format: Article
Language:English
Subjects:
Calibration
Cameras
CCD cameras
CCD photometry
Dark current
instrumentation
Linearity
Noise
Photometry
telescope
Telescopes
Upgrading
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Summary:The 85-cm telescope at Xinglong station is a prime focus system that operates well with high science outputs. The telescope has been upgraded since 2014 with a new corrector, and new filters and camera, which are provided by Beijing Normal University. The filter set is the Johnson-Cousins UBVRI system. We report the test results of the new system including bias, dark current, linearity, gain and readout noise of the CCD camera. Then we derive accurate instrumental calibration coefficients in UBVRI bands with Landolt standard stars during photometric nights. Finally, we give the limiting magnitudes with various exposure times and signal-to-noise ratios for observers as references.
ISSN:1674-4527
DOI:10.1088/1674-4527/18/9/107