We installed two sets of Astronomical Site Monitoring System(ASMS) at Lijiang Observatory(GMG), for the running of the 2.4-meter Lijiang optical telescope(LJT) and the 1.6-meter Multi-channel Photometric Survey Telescope (Mephisto). The Mephistro is under construction. ASMS has been running on robotic mode since 2017. The core instruments: Cloud Sensor, All-Sky Camera and Autonomous-DIMM that are developed by our group, together with the commercial Meteorological Station and Sky Quality Meter, are combined into the astronomical optical site monitoring system. The new Cloud Sensor's Cloud-Clear Relationship is presented for the first time, which is used to calculate the All-Sky cloud cover. We designed the Autonomous-DIMM located on a tower, with the same height as LJT. The seeing data have been observed for a full year. ASMS's data for the year 2019 are also analysed in detail, which are valuable to observers.
@article{arxiv.2004.12128,
title = {Astronomical Site Monitoring System at Lijiang Observatory},
author = {Yu-Xin Xin and Jin-Ming Bai and Bao-Li Lun and Yu-Feng Fan and Chuan-Jun Wang and Xiao-Wei Liu and Xiao-Guang Yu and Kai Ye and Teng-Fei Song and Liang Chang and Shou-Sheng He and Ji-Rong Mao and Liang Xu and Ding-Rong Xiong and Xi-Liang Zhang and Jian-Guo Wang and Xu Ding and Hai-Cheng Feng and Xiang-Kun Liu and Yang Huang and Bing-Qiu Chen},
journal= {arXiv preprint arXiv:2004.12128},
year = {2020}
}