木星伽利略卫星互掩互食天象的测光技术  

Photometric Techniques in Mutual Events of Galilean Satellites

作　　者：陈斌[1,2,3] 彭青玉[1,2,3] 

机构地区：[1]暨南大学计算机科学系,广州510632 [2]暨南大学中法天体测量、动力学与空间科学联合实验室,广州510632 [3]暨南大学光电信息与传感技术广东普通高校重点实验室,广州510632

出　　处：《空间科学学报》2011年第3期338-343,共6页Chinese Journal of Space Science

基　　金：国家自然科学基金项目(10g73007);暨南大学中央高校基本科研业务费专项资金共同资助

摘　　要：对行星天然卫星互掩互食天象进行测光可以得到非常准确的天体测量信息,这些信息可以用来进一步改进行卫星的运动理论和历表.对2003年在云南天文台1米望远镜上实际观测到的互掩互食图像进行测光处理,分析表明,在对木星去晕和测光孔径为1.5～2.0倍半高全宽条件下,所得光变曲线有较好的稳定性.The photometry of mutual occultations and eclipses of Galilean satellites of Jupiter can be used to deliver very accurate astrometric information,which can be further used for improvement of the dynamical models and their ephemerides of the concerned satellites.The photometry of the CCD images of mutual occultations and eclipses of Jupiter＇s satellites which were observed at Yunnan Observatory in 2003 was done and light curves in different situations were obtained.From the light curves,the midlight time and the decline magnitude can be obtained.It is found that the light curves will be stable when the halo around the Jupiter is removed and the photometric apertures are assigned between 1.5 and 2.0 times of FWHM of satellite＇s image.

关 键 词：木星伽利略卫星 去晕 孔径测光 光变曲线 图像分析 

分 类 号：P125[天文地球—天体测量]