基于ASCOM标准的天文电动调焦器设计

A Design Method of Small Astronomical Electric Focuser

随着天文技术的不断发展,远程观测和自主观测逐渐成为天文观测的主流趋势,自动调焦技术也越来越受到重视。电动调焦器是天文望远镜不可或缺的附属设备,是实现自动调焦的关键设备。为实现云南天文台丽江观测站10英寸米德望远镜的自动调焦,自行研发了一套天文电动调焦器,设计相关控制电路,制定串口通信协议,并编写了一套开源天文公共对象模型(Astronomy Common Object Model,ASCOM)驱动程序SS Focuser,详细介绍了该电动调焦器的结构原理和实现方法,实测结果表明,电动调焦器具有很好的稳定性,完全满足设计要求,为天文电动调焦器设计提供了可借鉴的经验和方法。

With the continuous development of astronomical technology,remote observation and autonomous observation have gradually become the mainstream trend of astronomical observation,and the automatic focusing technology has been paid more and more attention.The electric focuser is an indispensable accessory equipment of the astronomical telescope,and it is the key equipment for remote observation and autonomous observation to realize automatic focusing.In order to realize the automatic focusing of the 10 inch Meade telescope at Lijiang astronomical observatory of Yunnan Observatory,we developed a set of small telescope electric focuser,designed the relevant control circuit,developed the serial communication protocol,and wrote an open source ASCOM driver-SS focuser.This paper introduces the structure principle and realization method of the electric focusing device in detail.The experimental results show that it has good stability and fully meets the design requirements.It provides the experience and method for the design of the astronomical electric focuser.