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First light for the sodium laser guide star adaptive optics system on the Lijiang 1.8 m telescope

Kai Wei, Min Li, Shan-Qiu Chen, Yong Bo, Feng Chen, Jun-Wei Zuo, Qi Bian, Ji Yao, Lu-Chun Zhou, Lin Wei, Dong-Hong Chen, Yang Gao, Kai Jin, Xiao-Lin Dai, Han-Chu Fu, Chang Xu, Zhi-Chao Wang, Xiang-Hui Xue, Xue-Wu Chen, Xian-Mei Qian, Yu Zhou, Hao Xian, Qin-Jun Peng, Chang-Hui Rao, Zu-Yan Xu, Yu-Dong Zhang

Abstract


A first generation sodium Laser Guide Star Adaptive Optics System (LGS-AOS) was developed and integrated into the Lijiang 1.8 m telescope in 2013. The LGS-AOS has three sub-systems: (1) a 20 W long pulsed sodium laser, (2) a 300-millimeter-diameter laser launch telescope, and (3) a 37-element compact adaptive optics system. On 2014 January 25, we obtained high resolution images of an mV 8.18 star, HIP 43963, during the first light of the LGS-AOS. In this paper, the sodium laser, the laser launch telescope, the compact adaptive optics system and the first light results will be presented.


Keywords


instrumentation: adaptive optics — turbulence — atmospheric effects

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DOI: http://dx.doi.org/10.1088/1674%E2%80%934527%2F16%2F12%2F183

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Print ISSN: 1674-4527

Online ISSN: 2397-6209