摘要
恒星跟踪器是光干涉仪中的主要部分之一。简要介绍恒星跟踪器的一般情况和主要的设计原则,着重提出我国恒星干涉仪实验系统中将采用的—个新的方案。该方案的特点是两臂光束方向的检测置于光束合成器之后,并采用同一个检测系统。这有利于检测的准确性,并可降低对所用的多个光电倍增管一致性的要求。
Star tracking system is one of the main parts in a stellar interferometer. In this paper we briefely describe the general ways of monitoring the tilt of star light wavefronts and propose a new scheme of the star tracker for our prototype imterferometer. The monitoring system for the wavefront tilts is suggested to be set after the beam combiner and the same optical system shown in fig. 1 will be used to detect the two star light beams .A toothing modulating plate shuts the two beams alternatively when it is rotating. A photodiod is illuminated by an artificial light periodically because of the modulating plate, so as to distinguish the signals on the PMTs produced by the two star light beams. Some paremeters for the design of the star tracker are proposed here.
出处
《陕西天文台台刊》
CSCD
1992年第2期121-125,共5页
Publications of The Shaanxi Astronomical Observatiory
关键词
光学干涉仪
恒星跟踪器
设计
Optical inferferometer, wave front tilt, detector, star tracker
