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25 October 2004 Upgrade on 61-element adaptive optical system for 1.2-m telescope of Yunnan Observatory
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The 61-element adaptive optical system built for the 1.2m telescope of Yannan Observatory for astronomical observation is being upgraded. The Hartmann-Shack wavefront sensor, the tracking system, and the imaging system have been manufactured newly. The wavelengths for the Hartmann-Shack wavefront sensor and the imaging observation range from 400-700nm and 700-1000nm respectively. The arrangement of subapertures is hexagon matched with triangle arrangement of actuators. The detector of Hartmann-Shack sensor is a high-quantum-efficiency CCD with variable frame rate. The tracking system consists of two cascade control loops in order to improve the low-frequency compensation performance. In this paper, the upgrade on 61-element adaptive optical system for 1.2m telescope of Yunnan Observatory will be shown. The preliminary results of the upgraded 61-element adaptive optical system will be presented.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Changhui Rao, Wenhan Jiang, Yudong Zhang, Mei Li, Ning Ling, Xuejun Zhang, Feng Shen, Yanying Li, Chunlin Guan, Donghong Chen, Luchun Zhou, Liao Zhou, Guomao Tang, and Caixia Wang "Upgrade on 61-element adaptive optical system for 1.2-m telescope of Yunnan Observatory", Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004);

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