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Site testing at Muztagh-ata site II: seeing statistics

2020; IOP Publishing; Volume: 20; Issue: 6 Linguagem: Inglês

10.1088/1674-4527/20/6/87

2397-6209

Jing Xu, Ali Esamdin, Jinxin Hao, Jin-Min Bai, Ji Yang, Xu Zhou, Yongqiang Yao, Jin-Liang Hou, Guang-Xin Pu, Guojie Feng, Chunhai Bai, Peng Wei, Shuguo Ma, Abudusaimaitijiang Yisikandee, Le-Tian Wang, Xuan Zhang, Liang Ming, Lu Ma, Jinzhong Liu, Zihuang Cao, Yongheng Zhao, Feng Lu, Jianrong Shi, Hualin Chen, Chong Pei, Xiaojun Jiang, Jianfeng Wang, Jian-Feng Tian, Yan‐Jie Xue, Jingyao Hu, Yun-Ying Jiang,

Calibration and Measurement Techniques

In this article, we present a detailed analysis of the statistical properties of seeing for the Muztagh-ata site which is the candidate site for hosting future Chinese Large Optical/infrared Telescope (LOT) project. The measurement was obtained with Differential Image Motion Monitor (DIMM) from April 2017 to November 2018 at different heights during different periods. The median seeing at 11 meters and 6 meters are very close but different significantly from that on the ground. We mainly analyzed the seeing at 11 meters monthly and hourly, having found that the best season for observing was from late autumn to early winter and seeing tended to improve during the night only in autumn. The analysis of the dependence on temperature inversion, wind speed, direction also was made and the best meteorological conditions for seeing is given.