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8 February 2020 Transmittance measurements and predictions of optics contaminated with space materials in the ultraviolet–visible–near-infrared range
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Abstract

Space instruments such as solar arrays, radiators, or optics can be strongly impacted by molecular contaminants outgassed from spacecraft materials. For optics, transmittance and reflectance performances could indeed be modified by the deposit of contaminants. We report the transmittance measurements and predictions in the ultraviolet–visible–near-infrared range of contaminated optics from the outgassing of a mixture of two common materials used in space industry: EC2216 material (epoxy compound) and RTVS691 material (silicone compound). The Swanepoel model, commonly used in many fields, was employed for the first time in such conditions to easily and quickly predict transmittance. Transmittance was fully recovered at 20°C; a decontamination plan could be based on heating at this temperature at least during a duration depending on the silicone/epoxy contaminants layer thickness.

© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE) 2329-4124/2020/$28.00 © 2020 SPIE
Guillaume Rioland, Kazunori Shimazaki, Eiji Miyazaki, and Yugo Kimoto "Transmittance measurements and predictions of optics contaminated with space materials in the ultraviolet–visible–near-infrared range," Journal of Astronomical Telescopes, Instruments, and Systems 6(1), 018004 (8 February 2020). https://doi.org/10.1117/1.JATIS.6.1.018004
Received: 6 September 2019; Accepted: 21 January 2020; Published: 8 February 2020
JOURNAL ARTICLE
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