The wide-field photometric system of the Nanshan One-meter Telescope

• 作者: Chun-Hai Bai Guo-Jie Feng Xuan Zhang Hu-Biao Niu Abdusamatjan Eskandar Guang-Xin Pu Shu-Guo Ma Jin-Zhong Liu Xiao-Jun Jiang Lu Ma Ali Esamdin Na Wang
• 来源期刊: 天文和天体物理学研究
• 年，卷（期）: 2020,（12）
• 所属期刊栏目: Research Papers
• 页码范围: 183-192
• 页数: 10页
• 语种: 英文
• DOI: 10.1088/1674-4527/20/12/211

摘要

The Nanshan One-meter Wide-field Telescope is a prime focus system that is located at Nanshan Station of Xinjiang Astronomical Observatories.The field of view was designed to 1.5°×1.5°,and the Johnson-Cousins U BV RI system was chosen as the main filter set.The telescope has been providing observation services for astronomers since September 2013.Variable source searching and time-domain surveys are the main scientific goals.The system's test results are reported including linearity,dark current,bias,readout noise and gain of the CCD camera.The accurate instrumental calibration coefficients in U BV RI bands were driven with Landolt standard stars during photometric nights.Finally,the limiting magnitudes are given with signal-to-noise ratios and various exposure times for observers.