A Tilt-correction Adaptive Optical System for the Solar Telescope of Nanjing University

A tilt-correction adaptive optical system installed on the 430 mm Solar Telescope of Nanjing University has been put in operation. It consists of a tip-tilt mirror, a correlation tracker and an imaging CCD camera. An absolute difference algorithm is used for detecting image motion in the correlation tracker. The sampling frequency of the system is 419 Hz. We give a description of the system's configuration, an analysis of its performance and a report of our observational results. A residual jitter of 0.14 arcsec has been achieved. The error rejection bandwidth of the system can be adjusted in the range 5-28 Hz according to the beacon size and the strength of atmospheric turbulence.

作 者： Chang-Hui Rao Wen-Han Jiang Cheng Fang Ning Ling Wei-Chao Zhou Ming-De Ding Xue-Jun Zhang Dong-Hong Chen Mei Li Xiu-Fa Gao Tian Mi   作者單位： Chang-Hui Rao,Wen-Han Jiang,Ning Ling,Wei-Chao Zhou,Xue-Jun Zhang,Dong-Hong Chen,Mei Li(Adaptive Optics Lab., Institute of Optics and Electronics, Chinese Academy of Sciences, P. O. Box 350, Chengdu 610209)

Cheng Fang,Ming-De Ding,Xiu-Fa Gao,Tian Mi(Astronomy Department, Nanjing University, Nanjing 210093) 

刊 名： 天體物理學報(英文版)  ISTIC SCI 英文刊名： CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS  年，卷(期)： 2003 3(6)  分類號： P14  關鍵詞： telescopes - atmospheric effects - instrumentation - adaptive optics - Sun: atmospheric motions  

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