TY - JOUR
T1 - Calibration of the BATC survey
T2 - Methodology and accuracy
AU - Yan, Haojing
AU - Burstein, David
AU - Fan, Xiaohui
AU - Zheng, Zhongyuan
AU - Chen, Jiansheng
AU - Byun, Yong Ik
AU - Chen, Rui
AU - Chen, Wen Ping
AU - Deng, Licai
AU - Deng, Zugan
AU - Fang, Li Zhi
AU - Hester, Jeff J.
AU - Jiang, Zhaoji
AU - Li, Yong
AU - Lin, Weipeng
AU - Lu, Phillip
AU - Shang, Zhaohui
AU - Su, Hongjun
AU - Sun, Wei Hsin
AU - Tsay, Wean Shun
AU - Windhorst, Rogier A.
AU - Wu, Hong
AU - Xia, Xiaoyang
AU - Xu, Wen
AU - Xue, Suijian
AU - Zheng, Zheng
AU - Zhu, Jin
AU - Zou, Zhenlong
PY - 2000/5
Y1 - 2000/5
N2 - We describe in detail the extinction correction procedures used for the Beijing-Arizona-Taiwan-Connecticut Sky Survey (BATC Survey). The survey covers the spectral range 3200-9900 Å by utilizing a set of 15 intermediate-band filters. These filters are specifically designed to exclude most of the bright and variable night-sky emission lines. We also present extinction coefficients for the filter passbands for typical photometric nights at the Xinglong Observing Station, Beijing Astronomical Observatory (where the observations of the survey are being carried out). Time-dependent, low-amplitude (∼1%), nightly extinction variation has been observed. Such variation is demonstrably independent of filter bandpass and air mass, with amplitudes ranging from ∼0.01 to ∼0.03 mag. The variation is plausibly caused by slowly varying (at ∼1%) atmospheric extinction, possibly related to changes in air pressure/temperature/humidity that occur during the night. An iterative fitting scheme has been developed to take this time-varying component into account. We conclude that the survey can achieve its stated observational goal, namely, an absolute photometric calibration that is tied to the ABV system to an accuracy of 1% in all filters.
AB - We describe in detail the extinction correction procedures used for the Beijing-Arizona-Taiwan-Connecticut Sky Survey (BATC Survey). The survey covers the spectral range 3200-9900 Å by utilizing a set of 15 intermediate-band filters. These filters are specifically designed to exclude most of the bright and variable night-sky emission lines. We also present extinction coefficients for the filter passbands for typical photometric nights at the Xinglong Observing Station, Beijing Astronomical Observatory (where the observations of the survey are being carried out). Time-dependent, low-amplitude (∼1%), nightly extinction variation has been observed. Such variation is demonstrably independent of filter bandpass and air mass, with amplitudes ranging from ∼0.01 to ∼0.03 mag. The variation is plausibly caused by slowly varying (at ∼1%) atmospheric extinction, possibly related to changes in air pressure/temperature/humidity that occur during the night. An iterative fitting scheme has been developed to take this time-varying component into account. We conclude that the survey can achieve its stated observational goal, namely, an absolute photometric calibration that is tied to the ABV system to an accuracy of 1% in all filters.
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U2 - 10.1086/316564
DO - 10.1086/316564
M3 - Article
AN - SCOPUS:0034347448
SN - 0004-6280
VL - 112
SP - 691
EP - 702
JO - Publications of the Astronomical Society of the Pacific
JF - Publications of the Astronomical Society of the Pacific
IS - 771
ER -