中国天文学会学术期刊


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810m级光学 / 红外望远镜的高分辨率光谱仪

朱永田
(中国科学院南京天文光学技术研究所 南京 210042)
(
中国科学院国家天文台 北京 100012)

摘    要

    介绍并比较了Keck Subaru VLT HETGemini中的5810m天文望远镜的高分辨率光谱仪,分析这些仪器与24m级望远镜的阶梯光栅光谱仪或Coude光谱仪相比所采用的新设计思想和新技术。

       
关键词 光学望远镜:高分辨率 阶梯光栅 光谱仪
分类号 P111.2

 

High Resolution Spectrographs for 810m Class Optical / IR Telescopes

Zhu Yongtian
(Nanjing Institute of Astronomical Opticand Technocogy, Chinese Academy of Sciences, Nanjing 210042)
(National Astronomical Observatoies, Chinese Academy of Sciences, Beijing 100012)

Abstract

    There are more than one dozen of 810m class optical / IR telescopes recently completed, presently under construction, or planed. The construction of these large telescopes in astronomy has brought new opportunities for astrophysical research using high-resolution spectroscopy, at the same time, the designers of high resolution spectrographs for large telescope must also respond to new challenges since resolution of spectrograph against the aperture of telescope. In this paper, we review the design of several spectrographs planed or already available for use on 810m telescopes. These include Keck-HIRES, Subaru-HDS, VLT-UVES, HET-HRS and Gemini-HROS. Some new technologies and new design concepts are used in these spectrographs: white pupil design, very steep replicated mosaic echelles, immersed gratings, and refractive or catadioptric cameras.

    
Key words optical / IR telescope: high resolution echelle spetrograph



       
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