摘要
大气消光系数的测定是天文观测台站一项很重要和基础的工作.介绍了利用新建的2.4 m望远镜在高美古观测站开展的消光系数测定等定标工作的初步结果.利用2009年4～5月对Landolt标准星场的2次测光观测,分别给出了UBVRI 5个波段的消光系数.此外,对该站点大气消光的成分情况进行了探讨.给出的结果与数年前高美古观测站选址时得到的大气消光系数基本一致,并与其它一些知名天文观测台站的消光数据进行了比较.
The measurement of the atmospheric extinction coefficient is one of the important and fundamental measurements for astronomical observatories. By using the newly built 2.4 m telescope at Gaomeigu Observing Station of Yunnan Observatory, the calibration works, such as the measurement of the atmospheric extinction coefficient, are carried out and their preliminary results are presented. By observing the Landolt standard stellar fields during April and May 2009, the atmospheric extinction coefficients of UBVRI five bands at two nights are given. In addition, the components which contribute to the atmospheric extinction coefficients of this site are discussed. The measured extinction coefficients are found to be broadly consistent with the previous results obtained in the site selection some years ago. And they are also compared with the values of the other well-known observing stations worldwide.
出处
《天文学报》
CSCD
北大核心
2010年第4期422-431,共10页
Acta Astronomica Sinica
基金
国家自然科学基金项目(10533050)资助
关键词
大气效应
技术:测光
方法:数据分析
atmospheric effects, techniques： photometric, methods： data analysis
