低纬子午环度盘及其读数系统的改善  

Improvement on the Graduator and its Reading Systems in the LLMC

作　　者：王晓彬[1] 张周生[1] 

机构地区：[1]中国科学院云南天文台,云南昆明650011

出　　处：《云南天文台台刊》2000年第4期47-50,共4页Publications of the Yunnan Observatoty

基　　金：国家自然科学基金(19833010)重点资助项目;国家天文观测中心专项经费资助

摘　　要：本文介绍了子午环对度盘和读数显微镜的制造及装配的精度要求 ,叙述了低纬子午环上度盘的制造和装配中的问题 ,以及读数系统存在的问题 。Requirements of precision in manufacturing and assembling of the graduator and the reading microscopes in the LLMC are introduced in this paper.The problems from manufacture and assemble of the circle and those existing in the reading systems are described.According to the practical situation,the necessity that the fixed-angular method is used to determine the correction of the divided lines is discussed.

关 键 词：低纬子午环 度盘 读数系统 

分 类 号：P111.31[天文地球—天文学]