The correction of diurnal effects on CSTAR photometry

作     者：Song-Hu Wang Xu Zhou Hui Zhang Ji-Lin Zhou Hui-Gen Liu Ze-Yang Meng Jun Ma Tian-Meng Zhang Zhou Fan Hu Zou 

作者机构：Department of Astronomy & Key Laboratory of Modern Astronomy and Astrophysics in Ministry of EducationNanjing University National Astronomical ObservatoriesChinese Academy of Sciences 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2014年第14卷第3期

页      面：345-356页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：Supported by the National Natural Science Foundation of China 

主　　题：methods: data analysis techniques: photometric 

摘      要：In January, 2008 the Chinese Small Telescope ARray （CSTAR） was suc-cessfully deployed at Dome A, Antarctica. Because CSTAR consists of four static14.5 cm telescopes pointing at the same 4.5° x 4.5° field around the south celestialpole, diurnal motion can be seen in its field of view. The stars are centered at differentpositions in different exposure frames. During four months of continuous observationsduring the polar night of 2008, about 0.3 million/-band images were obtained. In thelatest version of the released photometric catalog, the effects of diurnal motion of thestars on the static CSTAR optical system can be obviously found. In this work, weupdate the CSTAR catalog by carefully analyzing and correcting the systematic errorscaused by diurnal motion of stars on imperfectly flat-fielded frames.