A sodium guide star adaptive optics system for the 1.8 meter telescope

Kai Wei; Changhui Rao; Yong Bo; Cheng Li; Min Li; Xuejun Zhang; Ang Zhang; Chunlin Guan; Luchun Zhou; Shanqiu Chen; Xian Hao; Wenli Ma; Yudong Zhang

doi:10.1117/12.925815

13 September 2012 A sodium guide star adaptive optics system for the 1.8 meter telescope

Kai Wei, Changhui Rao, Yong Bo, Cheng Li, Min Li, Xuejun Zhang, Ang Zhang, Chunlin Guan, Luchun Zhou, Shanqiu Chen, Xian Hao, Wenli Ma, Yudong Zhang

Author Affiliations +

Proceedings Volume 8447, Adaptive Optics Systems III; 84474K (2012) https://doi.org/10.1117/12.925815
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

We are developing a sodium guide star adaptive optics system for the 1.8 meter telescope, which consists of three main parts: (i) 20W microsecond pulsed laser system, (ii) Φ200mm laser launch telescope and (iii) 37-elements adaptive optics system. All of these three parts are mounted on the 1.8 meter telescope which is located in Gaomeigu site of Yunnan Astronomical Observatory, Chinese Academy of Sciences. The pulsed laser system and the launch telescope are rotated with the azimuthal base of the telescope. A miniaturized 37-elements low-order adaptive optics system including a 37-elelment deformable mirror and a 6x6 array Hartmann-Shack wavefront sensor is mounted at the Cassegrain focus taking account of the pulsed laser mode. A separate tip-tilt correction loop is also integrated into the system. This paper describes the details of this system, the simulation result and the test result in the lab. After the indoor test, the whole system will be shipped to 1.8 meter telescope. The latest commissioning status and results is presented also in this paper.

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Kai Wei, Changhui Rao, Yong Bo, Cheng Li, Min Li, Xuejun Zhang, Ang Zhang, Chunlin Guan, Luchun Zhou, Shanqiu Chen, Xian Hao, Wenli Ma, and Yudong Zhang "A sodium guide star adaptive optics system for the 1.8 meter telescope", Proc. SPIE 8447, Adaptive Optics Systems III, 84474K (13 September 2012); https://doi.org/10.1117/12.925815

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