The photometric system of the One-meter Telescope at Weihai Observatory of Shandong University
The photometric system of the One-meter Telescope at Weihai Observatory of Shandong University
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山东大学威海天文台一米望远镜测光系统
DOI：
10.1088/1674-4527/14/6/010
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发表时间：
2014-06-01
影响因子：
1.8
通讯作者：
Du, Jun-Ju
中科院分区：
文献类型：
--
作者：
Hu, Shao-Ming;Han, Sheng-Hao;Du, Jun-Ju
山东大学威海天文台的1米望远镜是f/8卡塞格林望远镜。三组过滤器安装在双层滤光轮中，使用Johnson-Cousins UBVRI， Sloan Digital Sky Survey u' g' r' i‘ z’和Stromgren uvby。介绍了光度测量系统和CCD相机，详细分析了它们的性能，确定了CCD相机的增益、读出噪声、暗电流和线性度等相关参数。此外，根据2007年9月至2013年8月的观测数据，系统地研究和报告了描述该站点天文气候的参数，包括典型能见度、晴朗夜数统计和平均天空亮度。光度校准使用朗道尔特标准恒星观测，时间跨度为8个晚上，得到了转换系数、光度精度和系统吞吐量。使用导出的校准参数和世卫组织的经典观测条件模拟了极限震级。
The one-meter telescope at Weihai Observatory (WHO) of Shandong University is an f/8 Cassegrain telescope. Three sets of filters are installed in a dual layer filterwheel that use Johnson-Cousins UBVRI, Sloan Digital Sky Survey u' g' r' i' z' and Stromgren uvby. The photometric system and the CCD camera are introduced, followed by detailed analysis of their performances, and determination of the relevant parameters, including gain, readout noise, dark current and linearity of the CCD camera. In addition, the parameters describing the site's astro-climate, including typical seeing, statistics on the number of clear nights and average sky brightness, based on data gathered from Sep. 2007 to Aug. 2013, are systematically studied and reported in this work. Photometric calibrations were done using Landolt standard star observations spanning eight nights, which yielded transformation coefficients, photometric precision and system throughput. The limiting magnitudes are simulated using the derived calibration parameters and classic observation conditions at WHO.