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Proceedings Paper

Infrared astronomical spectroscopy with a noncryogenic spectrograph
Author(s): Richard R. Joyce; Kenneth Harry Hinkle; Michael R. Meyer; Michael F. Skrutskie
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Paper Abstract

Large astronomical spectrographs designed for use in the visible for use in the visible can operate efficiently well beyond the long wavelength cutoff of CCD detectors. Given the expense and complexity of constructing IR-optimized high resolution or multi-object spectrographs, it is prudent to explore the range of scientific programs possible utilizing modern near-IR arrays at the focal plane of historically visible wavelength instruments. For the past three years, we have used the NICMASS camera, a 256 by 256 HgCdTe imager developed at the University of Massachusetts, at the camera 5 focus of the Coude Feed Spectrograph on Kitt Peak for moderate and high resolution IR spectroscopy in the 1-1.8 micrometers range. This configuration has been used at a spectral resolution 7200 using a 316 1/mm grating an extremely stable platform permitting radial velocity determinations to better than 1 km-s -1. We will discuss some scientific results obtained with this novel configuration and the performance limitations imposed by the ambient temperature spectrograph beyond a wavelength of 1 micrometers . We also discuss plans to evaluate the suitability of NICMASS for multi- object near-IR spectroscopy on the Hydra Bench Spectrograph at the WIYN telescope on Kitt Peak.

Paper Details

Date Published: 21 August 1998
PDF: 9 pages
Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); doi: 10.1117/12.317339
Show Author Affiliations
Richard R. Joyce, National Optical Astronomy Observatories (United States)
Kenneth Harry Hinkle, National Optical Astronomy Observatories (United States)
Michael R. Meyer, Univ. of Arizona (United States)
Michael F. Skrutskie, Univ. of Massachusetts/Amherst (United States)

Published in SPIE Proceedings Vol. 3354:
Infrared Astronomical Instrumentation
Albert M. Fowler, Editor(s)

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