Adaptive optical system based on deformable secondary mirror on 1.8-meter telescope

Changhui Rao; Ang Zhang; Xinlong Fan; Youming Guo; Kai Wei; Chunlin Guan; Xuejun Zhang; Cheng Li; Luchun Zhou; Shanqiu Chen; Hao Xian; Wenli Ma; Yuntao Cheng; Hong Zhou; Yudong Zhang

doi:10.1117/12.925659

13 September 2012 Adaptive optical system based on deformable secondary mirror on 1.8-meter telescope

Changhui Rao, Ang Zhang, Xinlong Fan, Youming Guo, Kai Wei, Chunlin Guan, Xuejun Zhang, Cheng Li, Luchun Zhou, Shanqiu Chen, Hao Xian, Wenli Ma, Yuntao Cheng, Hong Zhou, Yudong Zhang

Author Affiliations +

Proceedings Volume 8447, Adaptive Optics Systems III; 84473H (2012) https://doi.org/10.1117/12.925659
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

In 2009, A 127-element adaptive system had been manufactured and installed at the Coude room of the 1.8-meter telescope at the Gaomeigu site of Yunnan Astronomical Observatory, Chinese Academy of Sciences. A set of new adaptive optical system based on a 73-element deformable secondary mirror is being developed and will be integrated into the 1.8-meter telescope. The 73-element deformable secondary mirror with convex reflecting surface is designed to be compatible with the Cassegrain focus of the 1.8-meter telescope. Comparing with the AO system of Coude focus, the AO system on the deformable secondary mirror adopts much less reflections and consequently restrains the thermal noise and increases the energy transmitting to the system. The design and simulation results of this system will be described in this paper. Furthermore, the preliminary test result of the deformable secondary mirror in the lab is also presented.

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Changhui Rao, Changhui Rao, Ang Zhang, Ang Zhang, Xinlong Fan, Xinlong Fan, Youming Guo, Youming Guo, Kai Wei, Kai Wei, Chunlin Guan, Chunlin Guan, Xuejun Zhang, Xuejun Zhang, Cheng Li, Cheng Li, Luchun Zhou, Luchun Zhou, Shanqiu Chen, Shanqiu Chen, Hao Xian, Hao Xian, Wenli Ma, Wenli Ma, Yuntao Cheng, Yuntao Cheng, Hong Zhou, Hong Zhou, Yudong Zhang, Yudong Zhang, "Adaptive optical system based on deformable secondary mirror on 1.8-meter telescope", Proc. SPIE 8447, Adaptive Optics Systems III, 84473H (13 September 2012); doi: 10.1117/12.925659; https://doi.org/10.1117/12.925659

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