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Preliminary results on an H-alpha map of the Gum nebula obtained with the D-z-A satelliteHydrogen 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.
Document ID
Document Type
Conference Paper
Blamont, J. E. (Centre National de la Recherche Scientifique Verrieres-Le Buisson, France)
Levasseur, A. C. (Centre National de la Recherche Scientifique Verrieres-Le Buisson, France)
Date Acquired
August 6, 2013
Publication Date
September 1, 1971
Publication Information
Publication: NASA. Goddard Space Flight Center The Gum Nebula and Related Probl.
Subject Category
Distribution Limits
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19720004101Analytic PrimaryThe Gum nebula and related problems