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Proceedings Paper

Contamination Control Of The Infrared Astronomical Satellite
Author(s): Leonard C. Andreozzi; William R. Irace; Carl R. Maag
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Paper Abstract

The Infrared Astronomical Satellite, to be launched in August 1981, will perform an all-sky survey in the 8-120 μm wavelength region. High sensitivity to thermal radiation and the low operating temperature of optics and thermal control surfaces make the IRAS telescope extremely vulnerable to contamination. Four special topics of importance are discussed in this paper: (a) deposition of atmospheric gases, (b) sighting of particles released from the satellite, (c) functions of a deployable aperture cover, and (d) degradation of a radiatively cooled sunshade from spacecraft outgassing. These topics demonstrate how mission strategy, ground cleaning and handling, and hardware design are used to avoid contamination which would degrade telescope performance.

Paper Details

Date Published: 5 August 1980
PDF: 14 pages
Proc. SPIE 0216, Optics in Adverse Environments II, (5 August 1980); doi: 10.1117/12.958446
Show Author Affiliations
Leonard C. Andreozzi, Ball Corporation (United States)
William R. Irace, Jet Propulsion Laboratory (United States)
Carl R. Maag, Jet Propulsion Laboratory (United States)

Published in SPIE Proceedings Vol. 0216:
Optics in Adverse Environments II
Mark A. Kahan, Editor(s)

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