Exposure to space radiation of high-performance infrared multilayer-filters and materials technology experiments

J S Seeley, R Hunneman, A Whatley

in 'Long Duration Exposure Facility (LDEF) Mission 1 Experiments', NASA SP, 473, Pages 154-157 (1984)


Infrared multilayer interference filters have been used extensively in satellite radiometers for about 15 years. Filters manufactured by the University of Reading have been used in Nimbus 5, 6, and 7, TIROS N, and the Pioneer Venus orbiter. The ability of the filters to withstand the space environment in these applications is critical; if degradation takes place, the effects would range from worsening of signal-to-noise performance to complete system failure. An experiment on the LDEF will enable the filters, for the first time, to be subjected to authoritative spectral measurements following space exposure to ascertain their suitability for spacecraft use and to permit an understanding of degradation mechanisms.

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