Design, motivation, and on-sky tests of an efficient fiber coupling unit for 1-meter class telescopes
Design, motivation, and on-sky tests of an efficient fiber coupling unit for 1-meter class telescopes
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1米级望远镜高效光纤耦合单元的设计、动机和上天测试
DOI：
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发表时间：
2014
期刊：
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通讯作者：
Robert A. Wittenmeyer
中科院分区：
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作者：
M. Bottom;P. Muirhead;J. Swift;Ming Zhao;P. Gardner;P. Plavchan;R. Riddle;Erich Herzig;J. Johnson;J. Wright;N. McCrady;Robert A. Wittenmeyer
本文介绍了一种适用于自动化1米级望远镜的高通量光纤耦合单元的科学动机、设计和天空测试数据。详细介绍了光纤耦合器的光学和机械设计，并介绍了专门为该装置设计的柔性控制器软件。通过一组数值模拟对系统性能进行了表征，并给出了实际结果，验证了控制器的性能和光纤耦合的预期吞吐量。这个装置是专门为MINERVA阵列设计的，MINERVA阵列是一个机器人天文台，由多个0.7米望远镜组成，连接到一个高分辨率稳定光谱仪，用于使用高节奏径向测速法发现系外行星。然而，这种装置可以很容易地用于一般天文用途，需要光纤耦合或精确制导。
We present the science motivation, design, and on-sky test data of a high-throughput fiber coupling unit suitable for automated 1-meter class telescopes. The optical and mechanical design of the fiber coupling is detailed and we describe a flexible controller software designed specifically for this unit. The system performance is characterized with a set of numerical simulations, and we present on-sky results that validate the performance of the controller and the expected throughput of the fiber coupling. This unit was designed specifically for the MINERVA array, a robotic observatory consisting of multiple 0.7 m telescopes linked to a single high-resolution stabilized spectrograph for the purpose of exoplanet discovery using high-cadence radial velocimetry. However, this unit could easily be used for general astronomical purposes requiring fiber coupling or precise guiding.