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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 17, Iss. 16 — Aug. 15, 1978
  • pp: 2594–2598

Sky background measurements in the 4800–5800-Å region at the latitude of the polar cleft

Kjell Henriksen, Bengt Holbak, and Georg Witt  »View Author Affiliations


Applied Optics, Vol. 17, Issue 16, pp. 2594-2598 (1978)
http://dx.doi.org/10.1364/AO.17.002594


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Abstract

On the longitude of Scandinavia the dayside auroral emissions within the polar cleft can be measured continuously in midwinter. The intensity of the Rayleigh scattered sunlight is measured to be about 100 R/Å at 4860 Å when the solar depression angle is 10° and increases rapidly with decreasing solar depression angle. The effect of scattering vanishes around 14° solar depression angle, and the intensity of the sky background can be as low as 2 R/Å or 3 R/Å. Absolute measurements of auroral emissions for smaller so depression angles than 14° require separate observations of the sky background.

© 1978 Optical Society of America

History
Original Manuscript: December 10, 1977
Published: August 15, 1978

Citation
Kjell Henriksen, Bengt Holbak, and Georg Witt, "Sky background measurements in the 4800–5800-Å region at the latitude of the polar cleft," Appl. Opt. 17, 2594-2598 (1978)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-17-16-2594

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