Effect of the Shuttle contaminant environment on a sensitive infrared telescope

Details Effect of the Shuttle contaminant environment on a sensitive infrared telescope Effect of the Shuttle contaminant environment on a sensitive infrared telescope

Aug 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apopt..16.2051s&link_type=abstract

Applied Optics, vol. 16, Aug. 1977, p. 2051-2073.

Computer Science

Performance

5

Environment Effects, Infrared Instruments, Space Shuttle Orbiters, Spaceborne Telescopes, Spacecraft Contamination, Infrared Astronomy, Performance Tests, Photosensitivity, Radiance, Skylab Program, Water Vapor, Zodiacal Light

Scientific paper

A sensitive IR telescope on the Space Shuttle Orbiter will be limited in its performance by fluctuations in the IR radiation from the natural environment and the contaminant atmosphere. Models of the Orbiter's contaminant atmosphere were used to predict its spectral radiance from 3 to 300 microns. At 350 km, statistical fluctuations in the radiation from a water vapor column, and a noise equivalent power were measured. This noise is somewhat smaller than the expected contribution from zodiacal light from 5 to 30 microns. The column density of all IR emitting molecules can be kept low only if restrictions on rocket firings and liquid vents are maintained. The relatively low frequency of particle sightings from Skylab, coupled with improvements in Orbiter venting techniques, indicate that sightings of particles 2 microns and larger in radius will not seriously hamper telescope performance provided that liquid vents and rocket firings are properly restricted.

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