Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....61..635f&link_type=abstract
Astronomy and Astrophysics, vol. 61, no. 5, Dec. 1977, p. 635-639. Research supported by the Centre National d'Etudes Spatiales
Astronomy and Astrophysics
Astrophysics
14
Airglow, Celestial Bodies, Sky Brightness, Ultraviolet Spectroscopy, Zodiacal Light, Aerobee Rocket Vehicle, Elongation, Kohoutek Comet, Scattering Coefficients, Solar Flux, Spectral Resolution, Tracking (Position), Wavelengths
Scientific paper
The zodiacal light at 20-deg elongation and 10-deg inclination was observed by rocket ultraviolet spectrometers at 10-15-A resolution in the spectral range 1200-3200 A during an experiment designed to observe comet Kohoutek (1973 XII). The data were obtained above 180 km when scattered horizon light in the startracker caused a loss of tracking on the comet. Airglow emission due to NO and O(+), identified spectroscopically and by its variation with altitude, is significant between 1900 and 2500 A. Longward of 2600 A, the spectrum matches that of the sun, and the derived value of the color ratio, relative to the visible, is 0.90 + or - 0.20. At 1600 A, an upper limit on the zodiacal-light emission of 0.07 R per A or 7 hundred-millionths erg/s per sq cm/sterad per A is obtained.
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