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Solar Activity Study (174 to 1315 A)

NSSDCA ID: 1975-092A-01

Mission Name: D2B
Principal Investigator:Mr. Jean-Pierre Delaboudiniere


This experiment used two spectrometers to observe the solar disk at 17 different, discrete wavelengths between 174 and 1315 A (spectral resolution was 10 A0 and determined atmospheric absorption at sunrise and sunset for 11 discrete wavelengths between 177 and 1216 A. The absorption measurements yielded information on the composition of the upper atmosphere as a function of solar EUV output. The spatial resolution was of the order of 1 min of arc.

Alternate Names

  • D2B/SolarActivityStudy_174to1315A_

Funding Agency

  • Unknown (France)


  • Solar Physics: Visible
  • Solar Physics: Ultraviolet

Additional Information

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



NameRoleOriginal AffiliationE-mail
Mr. Jean-Pierre DelaboudinierePrincipal InvestigatorCNRS, Laboratoire de Physique Stellar
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