8-10m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 HET及Gemini中的5架8-10m天文望远镜的高分辨率光谱仪,分析这些仪器与2-4m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。
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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 8-10m 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 8-10m 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 8-10m
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. |
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Key words |
optical
/ IR telescope: high resolution - echelle - spetrograph |
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