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Proceedings Paper

GMTNIRS (Giant Magellan Telescope near-infrared spectrograph): design concept
Author(s): Sungho Lee; In-Soo Yuk; Hanshin Lee; Weisong Wang; Chan Park; Kwi-Jong Park; Moo-Young Chun; Soojong Pak; Joseph Strubhar; Casey Deen; Michael Gully-Santiago; Jared Rand; Haingja Seo; Jungmi Kwon; Heeyoung Oh; Stuart Barnes; John Lacy; John Goertz; Won-Kee Park; Tae-Soo Pyo; Daniel T. Jaffe
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Paper Abstract

We are designing a sensitive high resolution (R=60,000-100,000) spectrograph for the Giant Magellan Telescope (GMTNIRS, the GMT Near-Infrared Spectrograph). Using large-format IR arrays and silicon immersion gratings, this instrument will cover all of the J (longer than 1.1 μm), H, and K atmospheric windows or all of the L and M windows in a single exposure. GMTNIRS makes use of the GMT adaptive optics system for all bands. The small slits will offer the possibility of spatially resolved spectroscopy as well as superior sensitivity and wavelength coverage. The GMTNIRS team is composed of scientists and engineers at the University of Texas, the Korea Astronomy and Space Science Institute, and Kyung Hee University. In this paper, we describe the optical and mechanical design of the instrument. The principal innovative feature of the design is the use of silicon immersion gratings which are now being produced by our team with sufficient quality to permit designs with high resolving power and broad instantaneous wavelength coverage across the near-IR.

Paper Details

Date Published: 15 July 2010
PDF: 9 pages
Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77352K (15 July 2010); doi: 10.1117/12.857630
Show Author Affiliations
Sungho Lee, McDonald Observatory, The Univ. of Texas at Austin (United States)
Korea Astronomy and Space Science Institute (Korea, Republic of)
In-Soo Yuk, Korea Astronomy and Space Science Institute (Korea, Republic of)
Hanshin Lee, McDonald Observatory, The Univ. of Texas at Austin (United States)
Weisong Wang, The Univ. of Texas at Austin (United States)
Chan Park, Korea Astronomy and Space Science Institute (Korea, Republic of)
Kwi-Jong Park, Korea Astronomy and Space Science Institute (Korea, Republic of)
Moo-Young Chun, Korea Astronomy and Space Science Institute (Korea, Republic of)
Soojong Pak, Kyung Hee Univ. (Korea, Republic of)
Joseph Strubhar, McDonald Observatory, The Univ. of Texas at Austin (United States)
Casey Deen, The Univ. of Texas at Austin (United States)
Michael Gully-Santiago, The Univ. of Texas at Austin (United States)
Jared Rand, The Univ. of Texas at Austin (United States)
Haingja Seo, Kyung Hee Univ. (Korea, Republic of)
Jungmi Kwon, Korea Astronomy and Space Science Institute (Korea, Republic of)
Heeyoung Oh, Korea Astronomy and Space Science Institute (Korea, Republic of)
Kyung Hee Univ. (Korea, Republic of)
Stuart Barnes, Univ. of Canterbury (New Zealand)
McDonald Observatory, The Univ. of Texas at Austin (United States)
John Lacy, The Univ. of Texas at Austin (United States)
John Goertz, McDonald Observatory, The Univ. of Texas at Austin (United States)
Won-Kee Park, Seoul National Univ. (Korea, Republic of)
The Univ. of Texas at Austin (United States)
Tae-Soo Pyo, National Astronomical Observatory of Japan, Subaru Telescope (United States)
Daniel T. Jaffe, Korea Astronomy and Space Science Institute (Korea, Republic of)


Published in SPIE Proceedings Vol. 7735:
Ground-based and Airborne Instrumentation for Astronomy III
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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