木星卫星掩食观测与初步分析

Observations and Primary Analysis of the Eclipses and Occultation of Galileo Satellites

2009年7月在上海天文台江南天池观测站对木星伽利略卫星的相互掩食现象进行了观测。通过对此次观测获得的CCD图像进行测光处理和数据分析,确定了7月25日观测到的木卫一食木卫三的开始与结束时刻,以及被食星(木卫三)的光流量处于最小值的时刻。

In July 2009,observations of mutual eclipses and occultations of Galileo satellites of Jupiter were made at the South Tianchi station of Shanghai Observatory.By using the photometric CCD images obtained from these observations and analyzing the data,we determined the beginning and end times,as well as the midlight time when the light flux of the eclipsed satellite（Ganymede） dropped to the minimum during the event.