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Proceedings Paper

First light of the deformable secondary mirror-based adaptive optics system on 1.8m telescope
Author(s): Youming Guo; Ang Zhang; Xinlong Fan; Changhui Rao; Ling Wei; Hao Xian; Kai Wei; Xiaojun Zhang; Chunlin Guan; Min Li; Luchun Zhou; Kai Jin; Junbo Zhang; Longfeng Zhou; Xuejun Zhang; Yudong Zhang
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Paper Abstract

An adaptive optics system (AOS), which consists of a 73-element piezoelectric deformable secondary mirror (DSM), a 9x9 Shack-Hartmann wavefront sensor and a real time controller has been integrated on the 1.8m telescope at the Gaomeigu site of Yunnan Astronomical Observatory, Chinese Academy of Sciences. Compared to the traditional AOS on Coude focus, the DSM AOS adopts much less reflections and consequently restrains the thermal noise and increases the energy transmitting to the system. Before the first on-sky test, this system has been demonstrated in the laboratory by compensating the simulated atmospheric turbulence generated by a rotating phase screen. A new multichannel-modulation calibration method which is used to measure the DSM based AOS interaction matrix is proposed. After integration on the 1.8m telescope, the closed-loop compensation of the atmospheric turbulence with the DSM based AOS is achieved, and the first light results from the on-sky experiment are reported.

Paper Details

Date Published: 26 July 2016
PDF: 7 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 99091D (26 July 2016); doi: 10.1117/12.2231842
Show Author Affiliations
Youming Guo, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Ang Zhang, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Xinlong Fan, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Changhui Rao, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Ling Wei, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Hao Xian, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Kai Wei, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Xiaojun Zhang, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Chunlin Guan, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Min Li, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Luchun Zhou, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Kai Jin, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Univ. of Chinese Academy of Sciences (China)
Junbo Zhang, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Longfeng Zhou, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Univ. of Chinese Academy of Sciences (China)
Xuejun Zhang, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Yudong Zhang, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)


Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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