Viking infrared thermal mapper

Details Viking infrared thermal mapper Viking infrared thermal mapper

Apr 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apopt..17.1243c&link_type=abstract

Applied Optics, vol. 17, Apr. 15, 1978, p. 1243-1251. NASA-supported research.

Physics

Optics

7

Infrared Imagery, Mars (Planet), Thermal Mapping, Viking Orbiter Spacecraft, Alignment, Antireflection Coatings, Cassegrain Optics, Mars Atmosphere, Mars Photographs, Mars Surface, Radiance, Signal Processing, Thermopiles

Scientific paper

The infrared thermal mapper (IRTM) was designed to measure the emitted and reflected radiance of Mars. Carried by the Viking Orbiter, the IRTM contains four small Cassegrainian telescopes which each image the same, seven circular areas. There is a total of twenty-eight channels in four surface and one atmospheric thermal bands from 6 to 30 microns and a broad solar reflectance band. All channels are sampled simultaneously, using the spacecraft scanning capability to map the radiance over small and large areas of the planet. All channels use thermopile detectors; spectral passbands are determined by a combination of interference filters, detector lense materials, antireflection coatings, and restrahlen optics.

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