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9 July 2008 Silicon immersion grating spectrograph design for the NASA Infrared Telescope Facility
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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 Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. T. Tokunaga, T. Bond, D. T. Jaffe, M. J. Mumma, J. T. Rayner, E. V. Tollestrup, and D. W. Warren "Silicon immersion grating spectrograph design for the NASA Infrared Telescope Facility", Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70146A (9 July 2008); https://doi.org/10.1117/12.788253
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