摘要
用云台１ｍ望远镜镜卡焦（缩焦）ＣＣＤ测光系统对测光标准星进行了ＢＶＲＩ四色测光，计算得到了该系统的转换方程及其转换结果，并对计算结果进行了分析讨论．
BVRI photometry of standard stars was conducted in March 1995 with the cassegrain focal reducer CCD photometry system on the 1 meter telescope at Yunnan Observatory. The transformation equations for this system are derived and the transformed results obtained. All the results have been analysed and discussed, and the preliminary results on this CCD photometry system are presented.
