Physics
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985stin...8525011w&link_type=abstract
Unknown
Physics
Infrared Radiation, Light (Visible Radiation), Spacecraft Contamination, Spacelab, Oxygen Spectra, Photoluminescent Bands, Photometers, Radiant Flux Density, Space Shuttles, Space Transportation System, Spacecraft Glow, Thermal Radiation
Scientific paper
Infrared measurements of the Spacelab 1, Space Transportation System 9, were made from the Maui Optical Station tracking facility using a sensitive photometer n two infrared bands, the H-band centered at a wavelength of 1.6 microns and the K-band centered at 2.3 micrometers. The objective was to measure radiation from the vicinity of the Shuttle arising from interaction of Shuttle surfaces with atmospheric particles. It was necessary to include the Shuttle itself in the field of view of the photometer. The integrated brightness of the entire Shuttle at a distance of 400 km was found to be equivalent to that of a star of magnitude +6.6 or 1.6 microns; it was much fainter in the visible. Most of the emission at 1.6 microns appears to be attributable to the Shuttle glow phenomenon. It is hundreds of times brighter than the zodiacal background. The radiation at 2.3 microns can be accounted for primarily by diffusely scattered thermal radiation from Earth's surface.
Caroff Larry
Obrien K.
Witteborn Fred. C.
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