Performance of the Dark Energy Spectroscopic Instrument (DESI) focal plane
Performance of the Dark Energy Spectroscopic Instrument (DESI) focal plane
复制标题
暗能量光谱仪 (DESI) 焦平面的性能
DOI：
10.1117/12.2561631
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Fagrelius P
中科院分区：
文献类型：
--
作者：
Fagrelius P
最近投入使用的暗能量光谱仪（DESI）将使用重子声学振荡技术测量宇宙的膨胀历史。在实验期间，将测量超过14，000平方度的3500万个星系和类星体的光谱。KPNO Mayall望远镜的一个新的主焦点校正器将光线输送到5,000个光纤定位器，这些定位器依次为10个宽带光谱仪提供光线。DESI焦平面子系统包含光纤定位器和引导和聚焦相机，它们使光纤与天文目标对准。本文介绍了安装的仪器的性能。
The recently commissioned Dark Energy Spectroscopic Instrument (DESI) will measure the expansion history of the Universe using the Baryon Acoustic Oscillation technique. The spectra of 35 million galaxies and quasars over 14,000 sq deg will be measured during the life of the experiment. A new prime focus corrector for the KPNO Mayall telescope delivers light to 5,000 fiber optic positioners which in turn feed ten broad-band spectro- graphs. The DESI focal plane subsystem contains the fiber optic positioners and guide and focus cameras, which enable the alignment of fibers with astronomical targets. This paper describes the performance of the installed instrument.