高分辨率光谱仪与极大望远镜耦合问题分析

张弛; 朱永田; 张凯

高分辨率光谱仪与极大望远镜耦合问题分析

张弛^1,2,3, ,,
朱永田^,,
张凯^1,2,

1.
中国科学院国家天文台南京天文光学技术研究所,江苏南京 210042;
2.
中国科学院天文光学技术重点实验室,江苏南京 210042;
3.
中国科学院大学,北京 100049

基金项目:

国家自然科学基金国际合作重大项目（10373015）

详细信息

通讯作者:
张弛（1987-），女，吉林长春人，硕士研究生，主要从事天文光谱仪器研究工作。 Email：czhang@niaot.ac.cn

中图分类号: TN205;TH744.1
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- 文章访问数: 1583
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出版历程
- 刊出日期: 2014-10-14

Technique challenges in coupling of high resolution spectrograph with extremely large telescope

Zhang Chi^1,2,3, ,,
Zhu Yong-tian^1,2,
Zhang Kai^1,2

1.
National Astronomical Observatories/Nanjing Institute of Astronomical Optics &Technology,CAS,Nanjing 210042,China;
2.
Key Laboratory of Astronomical Optics &Technology,CAS,Nanjing 210042,China;
3.
University of Chinese Academy of Sciences,Beijing 100049,China

摘要

摘要: 介绍国际上地面极大光学/红外望远镜的研制概况，分析高分辨率光谱仪与极大口径望远镜耦合中的难题，结果表明极大口径望远镜需要超大面积阶梯光栅和超快焦比相机。根据光谱仪与望远镜的匹配关系，30 m级极大口径望远镜的高分辨率光谱仪的准直光束将大于70 cm，主色散阶梯光栅的面积大于2 m2，照相机的焦比F/0.5，按照目前的制造技术无法提供上述光栅和相机，因此，提出高分辨率光谱仪与极大望远镜进行耦合的技术。针对耦合问题给出了相应解决方案，即采用像切分器、拼接光栅以及白瞳设计等技术将是极大口径望远镜与高分辨率光谱仪耦合的主要解决方案。
- 天文望远镜 /
- 高分辨率光谱仪 /
- 阶梯光栅 /
- 光谱
Abstract: We reviewed the designing of several international ground-based extremely large optical/infrared telescopes and introduced the problems faced in the coupling of high resolution spectrograph with telescopes of extremely large aperture. It is proposed that large area of echelle and ultrafast focal ratio camera can serve as a solution. According to the coupling rule of the spectrogragh and the telescope, the diameter of collimated beam for a 30 m telescope would be over 70 cm, and the size of the main dispersion echelle grating would be larger than 2 m2. To build such huge and costly equipment would be difficult with current techniques. And large aperture camera with focal ratio F/0.5 is also hard to design and manufacture. Image slicer, mosaic gratings and white pupil optic become major solutions in designing the high resolution spectrograph for an extremely large aperture telescope.
- astronomical telescope /
- high-resolution spectrograph /
- echelle grating /
- spectra

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参考文献(1)

[1]Johns M, McCarthy P, Raybould K, et al. Giant magellan telescope-overview[C]//Ground-Based and Airborne Telescopes IV (SPIE) Conference, Amsterdam, Netherlands. USA:SPIE, 2012.
[2]Stepp L. Thirty meter telescope project[C]//Ground-Based and Airborne Telescopes IV (SPIE) Conference, Amsterdam, Netherlands. USA：SPIE,2012.
[3]Cayrel M. E-ELT optomechanics: Overview[C]//Ground-Based and Airborne Telescopes IV (SPIE) Conference, Amsterdam, Netherlands. USA:SPIE,2012.
[4]Su Dingqiang, Wang Yanan, Cui Xiangqun. A special configuration for future giant telescope[J]. Acta Astronomica Sinica, 2004. 45(1): 105-114.
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[5]Vogt S S, Allen S L, Bigelow B C, et al. HIRES:the high-resolution echelle spectrometer on the Keck 10m telescope[C]//Instrumentation in Astronomy VIII (SPIE) Conference, Kailua, Kona, HI, USA. USA: SPIE, 1994.
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[7]Zhu Yongtian. High resolution spectrographs for 8 m~10 m class optical/IR telescopes [J]. Progress in Astronomy, 2001, 19(2):336-345.
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武旭华，朱永田，王磊. 高分辨率阶梯光栅光谱仪的光学设计[J]. 光学精密工程，2003, 11(5): 442-447.

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文章访问数: 1583
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高分辨率光谱仪与极大望远镜耦合问题分析

通讯作者:
张弛（1987-），女，吉林长春人，硕士研究生，主要从事天文光谱仪器研究工作。 Email：czhang@niaot.ac.cn

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Technique challenges in coupling of high resolution spectrograph with extremely large telescope

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高分辨率光谱仪与极大望远镜耦合问题分析

通讯作者: 张弛（1987-），女，吉林长春人，硕士研究生，主要从事天文光谱仪器研究工作。 Email：czhang@niaot.ac.cn

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Technique challenges in coupling of high resolution spectrograph with extremely large telescope

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通讯作者:
张弛（1987-），女，吉林长春人，硕士研究生，主要从事天文光谱仪器研究工作。 Email：czhang@niaot.ac.cn