Discrete Time Dynamic Model for Telescope Auto-Guiding System

Journal of Astronomy and Space Sciences

Joon Hwa Lee¹ 

[1] School of Electrical and Computer Engineering University of Seoul, Seoul 130-743, Korea;

关键词: telescope;    tracking control;    CCD camera;    automatic control system;    instrumentation;   

DOI  :  10.5140/JASS.2007.24.4.431

来源: DOAJ

【 摘 要 】

In the auto-guiding system for obtaining a long exposure astrophotography, CCD camera is usually used for measuring guide errors which are affected by optical dispersion and mechanical disturbances. In this paper, a discrete time dynamic model and a performance index are proposed for analysing the auto-guiding system. The optimal gain for proportional control is derived considering the optical dispersion and the disturbances. Some experiments are provided to illustrate that the optimal control gain is lower as the optical dispersion is higher.

【 授权许可】

Unknown