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1 December 1991 Scatter and roughness measurements on optical surfaces exposed to space
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Optical systems which are used in the low orbits of the US Space Shuttle can be destroyed within some hours due to degrading by atomic oxygen. To investigate these effects the Surface Effects Sample Monitor SESAM was developed. SESAM will be mounted on the ASTRO-SPAS satellite and will carry different sets of optical samples. Different samples will be exposed during the launching, orbit and landing phases. Before and after each exposition phase the surfaces are hermetically sealed. The scattering characteristic of the samples are measured with a modified TIS apparatus, which allows the investigation of bare transparent substrates. Further information on the surface characteristics are collected using Nomarski differential interference contrast microscopy to obtain highly resolving 2D-images.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dirk-Roger Schmitt, Helmut Swoboda, and Helmut Rosteck "Scatter and roughness measurements on optical surfaces exposed to space", Proc. SPIE 1530, Optical Scatter: Applications, Measurement, and Theory, (1 December 1991);

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