Physics – Optics
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5490..943r&link_type=abstract
Advancements in Adaptive Optics. Edited by Domenico B. Calia, Brent L. Ellerbroek, and Roberto Ragazzoni. Proceedings of the SPI
Physics
Optics
2
Scientific paper
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.
Chen Donghong
Guan Chunlin
Jiang Wenhan
Li Mei
Li Yanying
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