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Auroral Photometers

NSSDCA ID: 1969-097A-07

Mission Name: Azur
Principal Investigator:Mr. A. Rossbach


Three photometers were used to measure the intensity of auroral emissions. Two photometers, operating at 3914 A (molecular nitrogen) and 2972 A (atomic oxygen), respectively, were located in the lower part of the magnetically oriented satellite to view the earth over the northern hemisphere. These two emissions were selected because they result mainly from excitation by primary electrons. A third photometer, which also operated at 3914 A, was located in the upper part of the satellite where its direction of view was away from the earth over the northern hemisphere. This unit was designed to provide background measurements. The experiment was activated only when the satellite was in the earth's shadow. The satellite stopped transmitting data on June 28, 1970.

Alternate Names

  • Azur/AuroralPhotometers

Facts in Brief

Mass: 2.55 kg
Power (avg): 0.7 W


    Additional Information

    Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office



    NameRoleOriginal AffiliationE-mail
    Mr. A. RossbachPrincipal InvestigatorDeutsche Forschungs-und Versuchsenstalt fuer Luft-und Raumfahrt
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