高美古2.4m望远镜的测光标准研究  

Study of the Photometric Standards of the GMG-2. 4m Telescope

作　　者：罗杨平[1] 

机构地区：[1]西华师范大学物理与电子信息学院,四川南充637009

出　　处：《西华师范大学学报（自然科学版）》2013年第4期389-394,共6页Journal of China West Normal University(Natural Sciences)

基　　金：国家自然科学基金资助(基金号:11303021)

摘　　要：利用31颗Landolt标准星进行测光定标观测,给出高美古2.4m望远镜测光系统在UBVRI波段的测光标准.中国丽江高美古天文观测站的消光系数测得为:U波段0.457、B波段0.237、V波段0.104、R波段0.078、I波段0.015.同时也给出高美古2.4m望远镜测光系统到标准系统的颜色转换关系.这些表明高美古天文观测站的大气透明度以及消光能与美国阿柏角天文台相媲美.A total of 31 Landolt standard stars have been employed as the standard stars for photometric calibration. We present the photometric standards in the UBVRI filters for GMG -2.4m telescope photometric system. The ex- tinction coefficients at the Gaomeigu site, Lijiang, China, were measured to be 0. 457 in U, 0. 237 in B, 0. 104 in V, 0. 078 in R, and 0. 015 in I. We also present the color transformation relations from the GMG -2.4m telescope systems to the standard system. This shows that the atmospheric transparency and extinction of Gaomeigu site can be comparable to those of Apache Point Observatory （APO）.

关 键 词：标准星 消光系数 测光 

分 类 号：P145[天文地球—天体物理]