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Preliminary results on an H-alpha map of the Gum nebula obtained with the D-z-A satellite (1971)

Blamont, J. E. ; Levasseur, A. C.

In: CASI

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Publication Date: 2016-06-07

Description: Hydrogen emissions, including telluric H alpha, in the terrestrial atmosphere were studied. The H alpha experiment was designed to use a monochromatic photometer that would provide measurements of weak H alpha emission originating at altitudes of a few hundred or thousand km, free of contamination by other telluric emissions. The Gum nebula was recorded by the instrument as a much more intense feature than the geocoronal emission. The spacecraft employed and the optical onboard equipment are described. Field of view, spectral response, absolute calibration, linearity, and inflight performance are discussed.

Keywords: SPACE SCIENCES

Type: NASA. Goddard Space Flight Center The Gum Nebula and Related Probl.; p 220-228

Format: application/pdf

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Bidirectional reflectance of the moonlit earth. (1971)

Blamont, J. E. ; Fowler, W. B. ; Reed, E. I.

In: Other Sources

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Publication Date: 2019-06-27

Description: Use of OGO-4 airglow photometer data and computed lunar spectral irradiances at the subsatellite point to examine the highest radiance over clouds and lowest radiance over open ocean near 3914, 5577, 5893, 6225, and 6300 A in terms of bidirectional reflectance. The results are compared to and are consistent with mathematical models of the atmosphere developed by Plass and Kattawar (1968, 1970) and with daytime measurements from OSO-3 by Neel et al. (1969).