The effect of out-gassing from commonly used spacecraft/space instrument materials on the UV-visible-IR reflectivity of optical surfaces

Barry Y. Welsh; Sharon Jelinsky

doi:10.1117/12.614178

30 August 2005 The effect of out-gassing from commonly used spacecraft/space instrument materials on the UV-visible-IR reflectivity of optical surfaces

Barry Y. Welsh, Sharon Jelinsky

Author Affiliations +

Proceedings Volume 5897, Photonics for Space Environments X; 58970B (2005) https://doi.org/10.1117/12.614178
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

We present laboratory measurements of the reduction in UV-to-visible/IR reflectivity (1200Å - 10,000Å) of optical surfaces due to 50Å - 500Å deposited layers of out-gassed molecular contaminants from 9 commonly used spacecraft/space instrument materials that include Apiezon-L hi-vacuum grease, Braycote-601EF lubricant, DC 704 silicon oil, EPOM rubber clad wire, PVC clad wire, Scotchweld 2216 epoxy, Uralane 5753 staking compound, Tefzel cable tie and Aeroglaze Z306 black paint on Kapton. Our results are compared with predictions from theoretical models currently being widely used throughout the space industry. Good agreement is found at UV wavelengths, but large differences occur at visible wavelengths. This latter effect is due to the application of Beer's Law, which ignores the non-negligible effect of reflectance scattering from the thin film of the contaminant.

Citation Download Citation

Barry Y. Welsh and Sharon Jelinsky "The effect of out-gassing from commonly used spacecraft/space instrument materials on the UV-visible-IR reflectivity of optical surfaces", Proc. SPIE 5897, Photonics for Space Environments X, 58970B (30 August 2005); https://doi.org/10.1117/12.614178

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