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Two-Channel Infrared Radiometer

NSSDCA ID: 1973-085A-06

Mission Name: Mariner 10
Principal Investigator:Mr. Stillman C. Chase, Jr.


The infrared radiometer utilized two channels, 22--39 micrometers (80--500 K) and 10--17 micrometers (200--650 K), to observe the thermal emission from Venus and Mercury in two broad spectral bands. The infrared thermal emission from the surface of Mercury between late afternoon and early morning (local time) and deviations from the average thermal behavior of the surface were measured. Measurements were also made of the brightness temperatures of Cytherian cloud tops and limb darkening phenomena. Attempts were made to correlate unusual temperature variations with photographs and measurements by other instruments to identify mountains, valleys, volcanoes, and unusual surface materials.

Alternate Names

  • Mariner10/Two-ChannelInfraredRadiometer
  • The Thermal Emission from Venus and Mercury in Two Broad Spectral Bands

Facts in Brief

Mass: 3.6 kg
Power (avg): 2.5 W

Funding Agency

  • Unknown (United States)


  • Planetary Science: Atmospheres
  • Planetary Science: Geology and Geophysics

Additional Information

Questions and comments about this experiment can be directed to: Dr. David R. Williams



NameRoleOriginal AffiliationE-mail
Dr. David D. MorrisonCo-InvestigatorUniversity of
Dr. J. M. SaariCo-InvestigatorBoeing Science Research Laboratory
Dr. Guido MunchCo-InvestigatorMax-Planck-Institut fur Astronomie
Dr. Gerry NeugebauerCo-InvestigatorCalifornia Institute of
Dr. Ellis D. MinerCo-InvestigatorNASA Jet Propulsion
Dr. Ellis D. MinerGeneral ContactNASA Jet Propulsion
Mr. Stillman C. Chase, Jr.Principal InvestigatorSanta Barbara Research Center

Selected References

  • Chase, S. C., et al., Preliminary infrared radiometry of Venus from Mariner 10, Science, 183, No. 4131, 1291-1292, doi:10.1126/science.183.4131.1291, Mar. 1974.
  • Chase, S. C., et al., Preliminary infrared radiometry of the night side of Mercury from Mariner 10, Science, 185, No. 4146, 142-145, doi:10.1126/science.185.4146.142, July 1974.
  • Chase, S. C., Jr., et al., Mariner 10 infrared radiometer results: Temperatures and thermal properties of the surface of Mercury, Icarus, 28, No. 4, 565-578, doi:10.1016/0019-1035(76)90130-5, Aug. 1976.
  • Taylor, F. W., Interpretation of Mariner 10 infrared observations of Venus, J. Atmos. Sci., 32, No. 6, 1101-1106, doi:10.1175/1520-0469(1975)032%3C1101:IOMIOO%3E2.0.CO;2, June 1975.
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