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6 June 1995 Design of an efficient infrared spectrometer for large telescopes
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Abstract
We present the conceptual design for a medium-resolution (R equals 2000, 6000) spectrometer for the near IR (0.9 micrometers - 5 micrometers ) to be used on the Gemini 8 m Telescopes. The design goal is to make optimum use of the unique characteristics of the telescopes: superb image quality and low near-IR background. This leads us to propose a mostly reflective design, with cold, pupil-reimaging fore-optics. We achieve a modest slit length of 100 arcsec. In addition to the basic high-spatial-resolution configuration, the design permits a number of important upgrades: a camera for use with a wider slit, a prism cross-disperser, an integral field module to spatially sample a small 2-D region of the focal plane. The spectrometer is designed around the next generation of InSb detectors, the 1024 X 1024 Aladdin arrays currently under development.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Brooke Gregory, Jonathan H. Elias, Richard Elston, and Timothy A. Ellis "Design of an efficient infrared spectrometer for large telescopes", Proc. SPIE 2475, Infrared Detectors and Instrumentation for Astronomy, (6 June 1995); https://doi.org/10.1117/12.211270
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