A tilt-correction adaptive optical system for the solar telescope of Nanjing University

作者：Rao CH^*; Jiang WH; Fang C; Ling N; Zhou WC; Ding MD; Zhang XJ; Chen DH; Li M; Gao XF; Mi T

来源：Chinese Journal of Astronomy and Astrophysics, 2003, 3(6): 576-586.

• telescopes
• atmospheric effects
• instrumentation
• adaptive optics
• Sun : atmospheric motions

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.

• 出版日期2003-12
• 单位中国科学院光电技术研究所; 南京大学