Design of an efficient infrared spectrometer for large telescopes

Brooke Gregory; Jonathan H. Elias; Richard Elston; Timothy A. Ellis

doi:10.1117/12.211270

6 June 1995 Design of an efficient infrared spectrometer for large telescopes

Brooke Gregory, Jonathan H. Elias, Richard Elston, Timothy A. Ellis

Proceedings Volume 2475, Infrared Detectors and Instrumentation for Astronomy; (1995) https://doi.org/10.1117/12.211270
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

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.

Citation Download Citation

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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