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Proceedings Paper

Assessment Of Condensable Molecular And Particulate Contamination Upon Optical Elements In Space Systems
Author(s): Lawrence M. Scherr; William Lee
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Paper Abstract

Scattering by condensible molecular contamination on mirrors can be modeled by assuming the contaminant has not uniformly covered the surface, but has coalesced into spherical particles. BRDF values representing scatter from these particles can be calculated by Mie theory. The model suggests that particles formed from the equivalent of a 10Å layer of molecular contaminant could give BRDF (1°) of approximately 5 x 10-4, for 10.6μ light. Thicker layers of molecular contamination could give BRDFs that begin to degrade stray light rejection in space telescopes.

Paper Details

Date Published: 1 January 1987
PDF: 11 pages
Proc. SPIE 0777, Optical Systems Contamination: Effects, Measurement, Control, (1 January 1987); doi: 10.1117/12.967072
Show Author Affiliations
Lawrence M. Scherr, Aerojet Electro Systems Co. (United States)
William Lee, Aerojet Electro Systems Co. (United States)

Published in SPIE Proceedings Vol. 0777:
Optical Systems Contamination: Effects, Measurement, Control
A. Peter M. Glassford, Editor(s)

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