LAMOST光纤单元位置匹配问题研究

Research on position matching of LAMOST fiber units

为了使LAMOST(大天区多目标光纤光谱天文望远镜)能够准确运转,需要对焦面板上光纤的位置进行检测和标定。在这一过程中,还需要对由前照法拍摄后所提取的光斑位置与单元实际位置进行匹配。在研究位置匹配的过程中,提出了一种经改进的以背照法[1]中的匹配方法为基础的新型匹配方法——最小值匹配法,有效地解决了原匹配方法在前照法检测过程中光斑数量众多、位置随机、计算量大等问题。实验证明,最小值匹配法的匹配正确率可满足LAMOST的使用需要。

In order to ensure that the Large Sky Area Multi-Object Fiber Spectroscopy Telescope（LAMOST）system can run accurately,it is necessary to measure the position of optical fibers on the focal plate of LAMOST.It is needed to match on the position of light spot extracted by front illuminate with the actual positions of units.During the study of position matching,a new pattern（the minimum matching method）based on the old one and more appropriate to front illuminate method is presented.With the new method,problems found in matching of front illuminate method,such as excessive amounts of light spots,random location,complicated calculations,are solved effectively.