A robotic Focal Plane System (FPS) for the Sloan Digital Sky Survey V
A robotic Focal Plane System (FPS) for the Sloan Digital Sky Survey V
复制标题
用于斯隆数字巡天 V 的机器人焦平面系统 (FPS)
DOI：
10.1117/12.2561113
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Shover, Jon
中科院分区：
文献类型：
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作者：
Pogge, Richard W.;Derwent, Mark A.;O'Brien, Thomas P.;Jurgenson, Colby A.;Pappalardo, Daniel;Engelman, Michael;Brandon, Christopher;Brady, Julia;Clawson, Nicholas;Shover, Jon
斯隆数字巡天V(SDSS-V)是对600万个天体的全天光谱观测，旨在破译银河系的历史，揭示恒星的内部运作，调查太阳系的起源，并跟踪整个宇宙中超大质量黑洞的增长。本文描述了用于SDSS-V的两个机器人焦平面系统(FPS)单元的设计和建造，它们将取代用于SDSS-V的斯隆和杜邦望远镜的传统SDSS光纤插板系统。每个FPS部署500个分区光纤定位器，使我们能够在采集后2-3分钟内将光纤重新配置到新的目标区域。每个定位器携带三根光纤：两根为BOSS和远地点光谱仪供电的科学光纤，第三根背面照明的计量光纤与望远镜安装的光纤观察相机(FVC)结合使用，以测量光纤头的绝对位置。300根远地点光纤分布在500个定位器中，以最大限度地扩大公共领域的覆盖范围。分布在定位器阵列内和周围的一组光纤照明基准为FVC系统建立了固定的参考系。最后，安装在焦平面周围的六个CCD摄像头提供采集、引导和聚焦监视功能。FPS是SDSS-V银河系和黑洞测绘仪测量的关键使能技术。
The Sloan Digital Sky Survey V (SDSS-V) is an all-sky spectroscopic survey of <6 million objects, designed to decode the history of the Milky Way, reveal the inner workings of stars, investigate the origin of solar systems, and track the growth of supermassive black holes across the Universe. This paper describes the design and construction of two robotic Focal Plane System (FPS) units that will replace the traditional SDSS fiber plug-plate systems at the Sloan and du Pont telescopes for SDSS-V. Each FPS deploys 500 zonal fiber positioners that allow us to reconfigure the fibers onto a new target field within 2-3 minutes of acquisition. Each positioner carries three fibers: two science fibers that feed the BOSS and APOGEE spectrographs and a third back-illuminated metrology fiber is used in conjunction with a telescopemounted Fiber Viewing Camera (FVC) to measure the absolute positions of the fiber heads. The 300 APOGEE fibers are distributed among the 500 positioners to maximize common field coverage. A set of fiber-illuminated fiducials distributed in and around the positioner array establish a fixed reference frame for the FVC system. Finally, six CCD cameras mounted around the periphery of the focal plane provide acquisition, guiding, and focus monitoring functions. The FPS is a key enabling technology of the SDSS-V Milky Way and Black Hole Mapper surveys.