摘要
论文给出了一种适合大天区面积多目标光纤光谱天文望远镜 (LAMOST)的新型光纤定位单元装置 .它包括一个作± 1 80°范围回转的中心回转机构和± 90°回转的偏心回转机构 .定位时 ,光纤始终在望远镜焦面上运动 ,不会发生离焦现象 ;且结构简单 ,装拆方便 ,易于保证精度 ,制造成本低 .测试结果表明 ,该单元装置完全能满足LAMOST的需要 .
This paper presents an optical fiber positioning unit device for LAMOST (Large Sky Area Multi Object Fiber Spectroscope Telescope). The device consists of a hollow shaft revolving mechanism, and eccentric axis revolving mechanism relative to the hollow shaft. The hollow shaft turns round at the range of ±180°and the eccentric axis turns round at the range of ±90° driven by each stepping motor. When positioning, the fiber end moves constantly on the focal plate without deviating from the focal plane. It has a simple structure, could be machined and assembled and taken down easily and could be ensured machining practices easily, so could be reduced manufacture costs. Testing results demonstrate that this new double revolving optical fiber positioning unit device well satisfies the requirements of LAMOST.
基金
国家九五大科学工程(98BJG001)资助项目
