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Proceedings Paper

Design of an efficient infrared spectrometer for large telescopes
Author(s): Brooke Gregory; Jonathan H. Elias; Richard Elston; Timothy A. Ellis
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Paper 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.

Paper Details

Date Published: 6 June 1995
PDF: 12 pages
Proc. SPIE 2475, Infrared Detectors and Instrumentation for Astronomy, (6 June 1995); doi: 10.1117/12.211270
Show Author Affiliations
Brooke Gregory, National Optical Astronomy Observatories (United States)
Jonathan H. Elias, National Optical Astronomy Observatories (United States)
Richard Elston, National Optical Astronomy Observatories (United States)
Timothy A. Ellis, National Optical Astronomy Observatories (United States)


Published in SPIE Proceedings Vol. 2475:
Infrared Detectors and Instrumentation for Astronomy
Albert M. Fowler, Editor(s)

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