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Proceedings Paper

Silicon immersion grating spectrograph design for the NASA Infrared Telescope Facility
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Paper Abstract

We present a conceptual design for an innovative infrared cross-dispersed spectrograph for the NASA Infrared Telescope Facility (IRTF) at Mauna Kea. This facility-class instrument will provide a resolving power of up to 80,000 at 1.2-2.5 μm and 67,000 at 3-5 μm with a minimum slit width of 0.25". The instrument employs a silicon immersion grating in order to reduce the size of the instrument. The design incorporates a 2048×2048 infrared array for the spectrograph and an infrared slit viewer. The optical design is optimized for the thermal infrared (2.8-5.5 μm).

Paper Details

Date Published: 9 July 2008
PDF: 11 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70146A (9 July 2008); doi: 10.1117/12.788253
Show Author Affiliations
A. T. Tokunaga, Institute for Astronomy, Univ. of Hawaii (United States)
T. Bond, Institute for Astronomy, Univ. of Hawaii (United States)
D. T. Jaffe, Univ. of Texas at Austin (United States)
M. J. Mumma, NASA Goddard Space Flight Ctr. (United States)
J. T. Rayner, Institute for Astronomy, Univ. of Hawaii (United States)
E. V. Tollestrup, Institute for Astronomy, Univ. of Hawaii (United States)
D. W. Warren, The Aerospace Corp. (United States)


Published in SPIE Proceedings Vol. 7014:
Ground-based and Airborne Instrumentation for Astronomy II
Ian S. McLean; Mark M. Casali, Editor(s)

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