Other
Scientific paper
Feb 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977p%26ss...25..173t&link_type=abstract
Planetary and Space Science, vol. 25, Feb. 1977, p. 173-184.
Other
6
Airglow, Calibrating, Explorer 51 Satellite, Ground Stations, Brightness, Interference Grating, Light Sources, Oxygen Spectra, Photometers, Tropical Regions, Zodiacal Light
Scientific paper
The visible airglow photometer on the Atmosphere Explorer C satellite has been used to compare the calibrations of a number of ground-based airglow observatories. Discrepancies between different ground stations as large as a factor of six have been revealed. Efforts to account for these discrepancies have resulted in the discovery of differences as large as a factor of two in the standard light sources in use at different observatories. The participation of additional observatories in the intercomparison of standard sources is solicited. The project has also led to the discovery of a source of error that can amount to another factor of two in the procedure used to calibrate many airglow instruments. In the course of the project, detailed maps based on satellite data have been made of the galactic and zodiacal-light background at a number of wavelengths, and a substantial source of contaminating emission has been discovered in the satellite data. The contamination appears to result from interaction of the spacecraft and the atmosphere at altitudes below 170 km.
Hays Paul B.
Kennedy Brian C.
Torr Marsha R.
Walker James C. G.
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