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Spectrophotometer and Scanning Photometer

NSSDCA ID: 1978-086C-03

Mission Name: Venera 12 Descent Craft
Principal Investigator:Dr. V. I. Moroz


This experiment was designed to gather information on the spectral composition of scattered solar radiation in the Venusian atmosphere. The upward-looking spectrophotometer continuously scanned the spectrum in the visible and near-infrared regions (0.43-1.17 micrometers) with a wavelength resolution of 0.022 micrometers. The scanning photometer made a circular scan in the vertical plane, recording the radiation in four broad wavelength ranges. The experiment was active during the descent at altitudes below 64 km and at the surface, making more than 500 measurements. The instrument was calibrated during descent by means of miniature incandescent lights mounted in both instruments. The instrument was described in Moroz, V. I. et al., 1983, Icarus, v. 53, n. 3, pp. 509-537.

Alternate Names

  • Venera12DescentCraft/SpectrophotometerandScanningPhotometer

Funding Agency

  • Unknown (U.S.S.R)


  • Planetary Science: Atmospheres

Additional Information

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



NameRoleOriginal AffiliationE-mail
Dr. V. I. MorozPrincipal InvestigatorSoviet Academy of Sciences

Selected References

  • Moroz, V. I., et al., Solar radiation scattered in the Venus atmosphere: The Venera 11,12 data, Icarus, 53, No. 3, 509-537, doi:10.1016/0019-1035(83)90213-0, Mar. 1983.
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