Contamination Control Of The Infrared Astronomical Satellite

Leonard C. Andreozzi; William R. Irace; Carl R. Maag

doi:10.1117/12.958446

5 August 1980 Contamination Control Of The Infrared Astronomical Satellite

Leonard C. Andreozzi, William R. Irace, Carl R. Maag

Proceedings Volume 0216, Optics in Adverse Environments II; (1980) https://doi.org/10.1117/12.958446
Event: 1980 Los Angeles Technical Symposium, 1980, Los Angeles, United States

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.

Citation Download Citation

Leonard C. Andreozzi, William R. Irace, and Carl R. Maag "Contamination Control Of The Infrared Astronomical Satellite", Proc. SPIE 0216, Optics in Adverse Environments II, (5 August 1980); https://doi.org/10.1117/12.958446

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