7 September 2006 GOES-12 molecular contamination
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The GOES-12 spacecraft exhibits a loss of heat rejection capabilities over the long term. It also presents a unique opportunity to evaluate this change at more than one temperature. The Imager and Sounder instruments use passive radiant coolers to reject heat from their sensors, and operate near 200 Kelvin. The Solar X-ray Imager (SXI) instrument mirror operates at or above 273 Kelvin. The mass deposition for SXI is substantially less than that of the Imager and Sounder. The phenomenon is evaluated and reasons for it discussed. This paper follows other descriptions by the author of the electrostatic return and introduces photolytic interactions at different temperatures.
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Jack Sanders, Jack Sanders, Glenn Rosecrans, Glenn Rosecrans, "GOES-12 molecular contamination", Proc. SPIE 6291, Optical Systems Degradation, Contamination, and Stray Light: Effects, Measurements, and Control II, 62910E (7 September 2006); doi: 10.1117/12.682006; https://doi.org/10.1117/12.682006


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