SPIRou @ CFHT: spectrograph optical design
SPIRou @ CFHT: spectrograph optical design
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SPIRou @ CFHT：摄谱仪光学设计
DOI：
10.1117/12.926697
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发表时间：
2012
影响因子：
3.5
通讯作者：
D. Loop
中科院分区：
文献类型：
--
作者：
S. Thibault;P. Rabou;J. Donati;Pierre Désaulniers;X. Dallaire;É. Artigau;F. Pepe;Y. Micheau;P. Vallée;F. Pepe;G. Barrick;V. Reshetov;O. Hernandez;L. Saddlemyer;J. Pazder;L. Parès;R. Doyon;X. Delfosse;D. Kouach;D. Loop
SPIRou是一个近红外中阶梯分光偏振计/速度计，正在为位于夏威夷莫纳克亚山的3.6米加拿大-法国-夏威夷望远镜（CFHT）设计。独特的科学能力和技术设计特征在本次会议的八篇论文中进行了描述。本文主要研究光谱仪的透镜设计。SPIROU光谱仪是一种近红外光纤双通交叉色散光谱仪。低温摄谱仪通过两根科学光纤与卡塞格伦装置相连。它也由来自仪器校准盒和RV参考模块的光纤馈电。它包括两个离轴抛物面（一个为双程）、一个中阶梯光栅、一列交叉色散棱镜（双程）、一个平面折叠镜、一个折射相机和一个探测器。本文介绍了摄谱仪单元的光学设计，并对其性能进行了评价。特别是，中阶梯光栅的选择进行了讨论，因为目标光栅是不是从市场上。
SPIRou is a near-infrared, echelle spectropolarimeter/velocimeter under design for the 3.6m Canada-France-Hawaii Telescope (CFHT) on Mauna Kea, Hawaii. The unique scientific capabilities and technical design features are described in the accompanying (eight) papers at this conference. In this paper we focus on the lens design of the optical spectrograph. The SPIROU spectrograph is a near infrared fiber fed double pass cross dispersed spectrograph. The cryogenic spectrograph is connected with the Cassegrain unit by the two science fibers. It is also fed by the fiber coming from the calibration box and RV reference module of the instrument. It includes 2 off-axis parabolas (1 in double pass), an echelle grating, a train of cross disperser prisms (in double pass), a flat folding mirror, a refractive camera and a detector. This paper describes the optical design of the spectrograph unit and estimates the performances. In particular, the echelle grating options are discussed as the goal grating is not available from the market.