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5 April 1983 Low Scatter And Surface Figure Histories Of The Space Infrared Experiment (SIRE) Primary Mirrors
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Time is a recognized enemy of both low scatter optical surfaces and metal mirror surface figure retention. Data has been accumulated over a four year period documenting the total integrated scatter (TIS), bidirectional reflectance distribution function (BRDF), and surface figure for the primary mirrors of the Space Infrared Experiment (SIRE). The scatter data shows that degradation of an order of magnitude in TIS can be expected to occur in roughly 19 months at a Los Angeles laboratory climate when using present storage techniques. The surface figure of the mirrors is shown to have little or no degradation with aging (less than or equal to 1/4 wave HeNe) but to have high dependency upon proper mounting and installation procedures. Cleaning and storage techniques are also presented.
© (1983) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Martha Diana M. Hammer and Michael P. Wirick "Low Scatter And Surface Figure Histories Of The Space Infrared Experiment (SIRE) Primary Mirrors", Proc. SPIE 0362, Scattering in Optical Materials II, (5 April 1983);


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