Seeing measurements for the Guoshoujing Telescope (LAMOST) site with DIMM

作     者：Li-Yong Liu Yong-Qiang Yao Yi-Ping Wang Jiang-Long Ma Bo-Liang He Hong-Shuai Wang 

作者机构：National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China Graduate University of Chinese Academy of Sciences Beijing 100049 China 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2010年第10卷第10期

页      面：1061-1070页

核心收录：

学科分类：07[理学] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 070401[理学-天体物理] 0704[理学-天文学] 081102[工学-检测技术与自动化装置] 0811[工学-控制科学与工程] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.10903014 and10778709) supported by the Young Researcher Grant of National Astronomical Observatories,Chinese Academy of Sciences 

主　　题：techniques atmospheric turbulence seeing -- instrumentation DIMM -- site testing LAMOST 

摘      要：We present seeing measurements of the Guoshoujing Telescope （formerly named the Large Sky Area Multi-Object Fiber Spectroscopic Telescope- LAMOST） site at Xinglong station during the period from 2007 March 12 to April 25. The measurements were carried out with the Differential Image Motion Monitor （DIMM）, and a total of 9259 data sets was obtained. The median seeing was measured to be 1.1″, with 25% being better than 0.8″and 75% better than 1.5″. The experiment shows that the DIMM exposure time has significant effects on the results of seeing measurements. An SBIG Polaris seeing monitor, which had been planned to be installed on the LAMOST site for long-term monitoring, was also employed during the DIMM observations. The results show that the SBIG seeing monitor is easily affected by gusty wind, resulting in larger seeing values. Considering the previous seeing measurements at Xinglong station over the last 15 yr, we conclude that an acceptable seeing condition at Xinglong station is around 1″-2″.