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Proceedings Paper

IRIS: a high-resolution midinfrared spectrometer for the upgraded 6.5-meter Multiple Mirror Telescope
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Paper Abstract

In mid-1996, the Multiple Mirror Telescope (MMT) will be upgraded from its current configuration of six 1.8-meter primary mirrors to house a single 6.5-meter primary. To exploit the dramatic increase in collecting area and spatial resolution, as well as the high infrared quality of the observing site, we have designed a new spectrometer that will cover the thermal infrared (4 to 25 micrometer) at high spectral and spatial resolution. The design is based on the new generation of Si:As BIB detectors with 256 by 256 formats, which represent a substantial advance in array size at these wavelengths. The design consists entirely of reflecting optics, and is arranged to deliver diffraction-limited resolution longwards of 8 micrometers. A maximum spectral resolving power of R equals 15,000 is provided by an echelle grating. A lower resolution grating or a plane mirror for two-dimensional imaging may be substituted for the echelle.

Paper Details

Date Published: 15 September 1995
PDF: 11 pages
Proc. SPIE 2540, Current Developments in Optical Design and Engineering V, (15 September 1995); doi: 10.1117/12.219527
Show Author Affiliations
Eric E. Bloemhof, Univ. of Arizona Multiple Mirror Telescope Observatory (United States)
George H. Rieke, Univ. of Arizona Steward Observatory (United States)


Published in SPIE Proceedings Vol. 2540:
Current Developments in Optical Design and Engineering V
Robert E. Fischer; Warren J. Smith, Editor(s)

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