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Proceedings Article

Silicon immersion grating spectrograph design for the NASA Infrared Telescope Facility

[+] Author Affiliations
A. T. Tokunaga, T. Bond, J. T. Rayner, E. V. Tollestrup

Institute for Astronomy, Univ. of Hawaii (USA)

D. T. Jaffe

Univ. of Texas at Austin (USA)

M. J. Mumma

NASA Goddard Space Flight Ctr. (USA)

D. W. Warren

The Aerospace Corp. (USA)

Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70146A (July 10, 2008); doi:10.1117/12.788253
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From Conference Volume 7014

  • Ground-based and Airborne Instrumentation for Astronomy II
  • Ian S. McLean; Mark M. Casali
  • Marseille, France | June 23, 2008

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).

© (2008) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

A. T. Tokunaga ; T. Bond ; D. T. Jaffe ; M. J. Mumma ; J. T. Rayner, et al.
"Silicon immersion grating spectrograph design for the NASA Infrared Telescope Facility", Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70146A (July 10, 2008); doi:10.1117/12.788253; http://dx.doi.org/10.1117/12.788253


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