用M15进行CCD视场的校准  

The Calibration of CCD Field via M15

作　　者：刘建荣[1] 乔荣川[2] 

机构地区：[1]中国科学院陕西天文台,陕西省临潼710600 [2]中国科学院光学天文联合开放研究实验室

出　　处：《陕西天文台台刊》1998年第2期66-69,共4页Publications of The Shaanxi Astronomical Observatiory

基　　金：国家自然科学基金;中国科学院天文委员会基金

摘　　要：用1996年10月所获得的球状星团M15和大距离双星61Cygni的CCD观测资料，分别求解了上海天文台1.56m天体测量望远镜上安装的CCD探测器视场的位置角改正δp和尺度因子ρ。通过对土星主要卫星观测资料0－C的计算分析表明，经球状星团校准视场后所得结果较双星校准后结果的精度要高。该结论为进一步提高计算大行星卫星的位置测量精度打下良好的基础。Two sets of calibrating parameters, δp and ρ, of the CCD detector, which was installed on the 1. 56-metre astronometric reflector of Shanghai Observatory, have been determined via observing the wide double star 61 Cygni and globular clusters respectively.The preliminary analysis of the O-C residuals of the major saturnian satellites has shown that the precisions of the scales and orientations obtained using the calibrating parameters from the observation of globular cluster are obviously better than those obtained using the parameters from the double star. This work would contribute to further improvement of the precision of the measured positions for the satellites of the planets.

关 键 词：天体测量 土星卫星 球状星团 视场校准 CCD 

分 类 号：P123[天文地球—天体测量]