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Proceedings Paper

Tilt-correction adaptive optical system for Solar Telescope of Nanjing University
Author(s): Changhui Rao; Wenhan Jiang; Cheng Fang; Ning Ling; Weichao Zhou; Mingde Ding; Xuejun Zhang; Donghong Chen; Mei Li; Xiufa Gao; Tian Mi
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Paper Abstract

A tilt-correction adaptive optical system installed at 430mm Solar Telescope at Nanjing University has been in operation. It is made up of a tip-tile mirror, a correlation tracker and an imaging CCD camera. The Absolute Difference algorithm is used in order to detect image motion in the correlation tracker. The sampling frequency of the system is 419Hz. In this paper, the configuration of the system is described. The observation results are reported. Furthermore, the performance of the system is analyzed. The residual jitter of 0.14arcsec has been achieved. The error rejection bandwidth of the system can be adjusted in the range from 5Hz to 28Hz according to the beacon size and the strength of the atmospheric turbulence.

Paper Details

Date Published: 11 February 2003
PDF: 9 pages
Proc. SPIE 4853, Innovative Telescopes and Instrumentation for Solar Astrophysics, (11 February 2003); doi: 10.1117/12.460278
Show Author Affiliations
Changhui Rao, Institute of Optics and Electronics (China)
Wenhan Jiang, Institute of Optics and Electronics (China)
Cheng Fang, Nanjing Univ. (China)
Ning Ling, Institute of Optics and Electronics (China)
Weichao Zhou, Institute of Optics and Electronics (China)
Mingde Ding, Nanjing Univ. (China)
Xuejun Zhang, Institute of Optics and Electronics (China)
Donghong Chen, Institute of Optics and Electronics (China)
Mei Li, Institute of Optics and Electronics (China)
Xiufa Gao, Nanjing Univ. (China)
Tian Mi, Nanjing Univ. (China)


Published in SPIE Proceedings Vol. 4853:
Innovative Telescopes and Instrumentation for Solar Astrophysics
Stephen L. Keil; Sergey V. Avakyan, Editor(s)

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