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中国天文学会学术期刊

天文学进展

PROGRESS IN ASTRONOMY

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HST WFPC2天体测量和测光方法最新进展

陈　鼎，王家骥，陈　力
(中国科学院　上海天文台，上海 200030)

摘要

对于哈勃空间望远镜(HST)来说，其广角行星照相机(WFPC2)的CCD性能的数据处理校正对提高天体测量和测光结果的精度有着重要意义。最近几年由于WFPC2对精度要求越来越高，其数据处理方法和校正方法包括点扩散函数、行误差和畸变修正等各个方面的研究都有了很大改进和进展。对近年来上述方面的最新进展作了介绍，并评价了其优缺点，提出了一些有待解决的问题。

Recent Progress on Astrometry and Photometry With HST WFPC2

CHEN Ding, WANG Jia-ji, CHEN Li
(Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China)

　Abstract

The calibrations of the CCD on HST WFPC2 are very important to improve the precision of astrometry and photometry. Many efforts have been devoted to the PSF (point spread function), row error of CCD and the correction of optical distortion. In recent years, higher precision is needed in some astrometry and photometry research, many further improvement of the method of reduction and calibration are carried out. These developments are briefly reviewed. Finally, some comments and prospective studies on these methods are presented.