低纬子午环配备科学CCD的必要性和可行性

The Necessity and Feasibility of a Scientific CCD Attached to the LLMC

从基本天体测量学科的发展趋势和低纬子午环的课题目标出发，叙述了该仪器配备科学ＣＣＤ的必要性和对仪器性能的相应要求，并根据仪器的各种误差的测定方法和测定精度的分析，论述了该仪器配备科学ＣＣＤ后对天体位置作高精度绝对测定的可行性，文中还提出了对配备科学ＣＣＤ的总体要求。

The fundamental astrometry is now developing in the direction of observing very faint and a great number of star. The purpose of the LLMC is to construct a quasi-inertial reference frame and to provide some useful information for the study of our solar system and the Galaxy. Therefore, it is necessary to have a scientific CCD attached to the LLMC. On the other hand, since the measuring precision of all instrumental errors is comparable to the positional precision of the scientific CCD, it is feasibility that high precise absolute observation can be carried out after a scientific CCD is attached to the LLMC.