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Proceedings Paper

Far-infrared Fabry-Perot spectrometer as satellite-based atmospheric limb sounder
Author(s): Jan J. Wijnbergen; Paul de Valk; John P. Burrows; Kelly Van Chance; Wolfgang Schneider
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Paper Abstract

An excellent instrument to observe the emission lines of OH in the far infrared is a cooled scanning Fabry-Perot (FP) where the orders are selected by means of a grating monochromator. A compact liquid helium cooled prototype has been built for airplane missions. A similar device is the OHIO instrument, proposed for limb observations from a satellite and applying detectors in conjunction with space-qualified refrigerators. Compared with heterodyne receivers, an FP at 80 K offers a comparable sensitivity in the 100 (mu) wavelength region and much better values with bolometric detectors optimized for lower temperatures. Compared to satellite-borne Fourier Transform Spectrometers (FTS), the FP instrument is more sensitive at 80 K; the FTS measures many superfluous spectral elements. The FP is superior at temperatures low enough to allow photon-noise-limited detector operation.

Paper Details

Date Published: 23 December 1994
PDF: 8 pages
Proc. SPIE 2309, Passive Infrared Remote Sensing of Clouds and the Atmosphere II, (23 December 1994); doi: 10.1117/12.196687
Show Author Affiliations
Jan J. Wijnbergen, Space Research Organisation Netherlands (Netherlands)
Paul de Valk, Space Research Organisation Netherlands (Netherlands)
John P. Burrows, Univ. of Bremen (Germany)
Kelly Van Chance, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Wolfgang Schneider, German Remote Sensing Data Ctr. (Germany)

Published in SPIE Proceedings Vol. 2309:
Passive Infrared Remote Sensing of Clouds and the Atmosphere II
David K. Lynch, Editor(s)

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