Far-infrared BRDFs and reflectance spectra of candidate SOFIA telescope, cavity, and focal-plane instrument surfaces

Allan W. Meyer; Sheldon M. Smith; Christopher T. Koerber

doi:10.1117/12.389125

20 June 2000 Far-infrared BRDFs and reflectance spectra of candidate SOFIA telescope, cavity, and focal-plane instrument surfaces

Allan W. Meyer, Sheldon M. Smith, Christopher T. Koerber

Author Affiliations +

Proceedings Volume 4014, Airborne Telescope Systems; (2000) https://doi.org/10.1117/12.389125
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

The far-infrared reflectance and scattering properties of telescope surfaces, surrounding cavity walls, and surfaces within focal-plane instruments can be significant contributors to background noise. Radiation from sources well off-axis, such as the earth, moon or aircraft engines may be multiply scattered by the cavity walls and/or surface facets of a complex telescope structure. The Non-Specular Reflectometer at NASA Ames Research Center was reactivated and upgraded, and used to measure reflectance and Bi- directional Reflectance Distribution Functions for samples of planned telescope system structural materials and associated surface treatments.

Citation Download Citation

Allan W. Meyer, Sheldon M. Smith, and Christopher T. Koerber "Far-infrared BRDFs and reflectance spectra of candidate SOFIA telescope, cavity, and focal-plane instrument surfaces", Proc. SPIE 4014, Airborne Telescope Systems, (20 June 2000); https://doi.org/10.1117/12.389125

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