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首页> 外文会议>Conference on Instrument Design and Performance for Optical/Infrared Ground-based Telescopes Pt.3, Aug 25-28, 2002, Waikoloa, Hawaii, USA >MIKE: A Double Echelle Spectrograph for the Magellan Telescopes at Las Campanas Observatory
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MIKE: A Double Echelle Spectrograph for the Magellan Telescopes at Las Campanas Observatory

机译：MIKE：拉斯坎帕纳斯天文台麦哲伦望远镜的双埃歇尔光谱仪

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摘要

The Magellan Inamori Kyocera Echelle (MIKE) is a double echelle Spectrograph designed for use at the Magellan Telescopes at Las Campanas Observatory in Chile. It is currently in the final stages of construction and is scheduled for commissioning in the last quarter of 2002. In standard observing mode, the blue (320-480 nm) and red (440-1000 nm) channels are used simultaneously to obtain spectra over the full wavelength range with only a few gaps in wavelength coverage at the reddest orders. Both channels contain a three-group set of all-spherical, standard optical glass and calcium fluoride lenses which function as both camera and collimator in a double pass configuration. A single, standard echelle grating is used on each side and is illuminated close to true Littrow. Prism cross-dispersers are also used double-pass, and provide a minimum separation between orders of 6 arcsec. Spectral resolution is 19,000 and 25,000 on the red and blue sides, respectively, with a 1 arcsec slit. Typical rms image diameter is less than 0.2 arcsec, so that resolution increases linearly with decreasing slit width. The standard observing mode will use a slit up to 5" long, however a fiber-fed mode will also be available using blocking filters to select the desired orders for up to 256 objects at a time. In this paper, we describe the optical and mechanical design of the instrument.
机译：麦哲伦稻荷Inmori Kyocera Echelle（MIKE）是一款双阶梯质谱仪，设计用于智利拉斯坎帕纳斯天文台的麦哲伦望远镜。它目前处于施工的最后阶段，计划于2002年最后一个季度投入使用。在标准观察模式下，蓝色（320-480 nm）和红色（440-1000 nm）通道同时用于获得光谱。在整个波长范围内，波长覆盖范围只有最短的几个间隔。两个通道均包含三组全球形，标准光学玻璃和氟化钙透镜，它们在双通道配置中既充当照相机又充当准直仪。每侧使用单个标准阶梯光栅，并在接近真正的Littrow的情况下进行照明。棱镜交叉分散器也可通过两次通过，并提供6 arcsec量级之间的最小间隔。红色和蓝色侧的光谱分辨率分别为19,000和25,000，缝隙为1 arcsec。典型的均方根图像直径小于0.2 arcsec，因此分辨率随着狭缝宽度的减小而线性增加。标准观察模式将使用最长5英寸的狭缝，但是也可以使用光纤馈送模式，该模式使用分块滤镜一次最多选择256个物体的所需阶数。在本文中，我们将介绍光学和仪器的机械设计。

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