Abstract

Advances in astronomy led to the demand for measuring the spectra of multiple night sky objects simultaneously. Some of these Multi-Object Spectrographs use robotic systems that position optical fibers in the focal plane of the observing telescope. These systems rely on precise fiber placement in order to collect the light spectra of faint stars and galaxies. Here, we present how to design, control, and operate micro SCARA-like robots to position optical fibers to micrometer precision. As an illustrative example, we show the design and performance results of the SDSS-V fiber positioner, which has been build for the Apache Point Observatory and the Las Campanas Observatory with 500 units for each telescope.

摘要

天文学的进步导致需要同时测量多个夜空物体的光谱。这些多对象光谱仪中的一些使用机器人系统将光纤放置在观测望远镜的焦平面中。这些系统依靠精确的光纤放置来收集微弱的恒星和星系的光谱。在这里，我们介绍如何设计，控制和操作类似于微型SCARA的机器人，以将光纤定位到微米精度。作为说明性示例，我们展示了SDSS-V光纤定位器的设计和性能结果，该定位器是为Apache Point天文台和Las Campanas天文台建造的，每个望远镜有500个单位。