摘要
介绍了低纬子午环上设置方位机构的必要性和这套机构的结构，分析了在仪器升降和转置过程中，引起三个支承螺杆晃动的原因和对仪器方位定向的影响，叙述了减小晃动的办法和克服剩余影响的临时措施。
The structure of the amimuth transmission mechanism used in the LLMC is described in this paper.It is to fit the need of 180 degree transposition of the horizontal axis and alternate observation along the meridian and prime vertical,i.e.,the instrument is transposed to fixed direction using a step motor after it is raised 13 mm by the two raising and lowering motors.The reason why the instrumental amimuth direction deviates after it is transposed and the method to measure and correct this deviation by combining mechanical and astronomical means are analyzed.
出处
《天文研究与技术》
CSCD
1997年第S1期26-31,共6页
Astronomical Research & Technology
