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Proceedings Paper

An updated 37-element low-order solar adaptive optics system for 1-m new vacuum solar telescope at Full-Shine Lake Solar Observatory
Author(s): Changhui Rao; Lei Zhu; Naiting Gu; Xuejun Rao; Lanqiang Zhang; Chunlin Guan; Donghong Chen; Shanqiu Chen; Cheng Wang; Jun Lin; Zhong Liu
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Paper Abstract

A low-order solar adaptive optics (AO) system, which consists of a fine tracking loop with a tip/tilt mirror and a correlation tracker, and a high-order correction loop with a 37-element deformable mirror, a correlating Shack-Hartmann wavefront sensor and a high-order wavefront correction controller, had been successfully developed and installed at 1-m New Vacuum Solar Telescope of Full-shine Lake (also called Fuxian Lake) Solar Observatory. This system is an update of the 37-element solar AO system designed for the 26-cm Solar Fine Structure Telescope at Yunnan Astronomical Observatory in 2009. The arrangement of subapertures of the Shack-Hartmann wavefront sensor was changed from square to hexagon to achieve better compensation performance. Moreover, the imaging channel of the updated system was designed to observe the Sun at 710nm and 1555nm simultaneously. The AO system was integrated into the solar telescope in 2011, and AO-corrected high resolution sunspots and granulation images were obtained. The observational results show that the contrast and resolution of the solar images are improved evidently after the correction by the AO system.

Paper Details

Date Published: 13 September 2012
PDF: 8 pages
Proc. SPIE 8447, Adaptive Optics Systems III, 844746 (13 September 2012); doi: 10.1117/12.924338
Show Author Affiliations
Changhui Rao, Institute of Optics and Electronics (China)
Lei Zhu, Institute of Optics and Electronics (China)
Naiting Gu, Institute of Optics and Electronics (China)
Xuejun Rao, Institute of Optics and Electronics (China)
Lanqiang Zhang, Institute of Optics and Electronics (China)
Graduate School of Chinese Academy of Sciences (China)
Chunlin Guan, Institute of Optics and Electronics (China)
Donghong Chen, Institute of Optics and Electronics (China)
Shanqiu Chen, Institute of Optics and Electronics (China)
Cheng Wang, Institute of Optics and Electronics (China)
Jun Lin, Yunnan Astronomical Observatory (China)
Zhong Liu, Yunnan Astronomical Observatory (China)

Published in SPIE Proceedings Vol. 8447:
Adaptive Optics Systems III
Brent L. Ellerbroek; Enrico Marchetti; Jean-Pierre Véran, Editor(s)

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