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Viking 1/2

The Viking mission used two spacecraft, Viking 1 and Viking 2, to study Mars. Each spacecraft consisted of an Orbiter and a Lander. Viking 1 launched on August 20, 1975 and entered Mars orbit on Mars on June 19, 1976. Viking 2 launched September 9, 1975 and entered Mars orbit on August 7, 1976. After the Landers detached from the Orbiters, the Orbiters continued imaging and other scientific operations. The Viking mission objectives included high resolution imaging of the Martian surface and characterizing the structure and composition of the atmosphere and surface.

Viking 1/2 Resources

• Viking Information at the NSSDC

Infrared Thermal Mapper (IRTM)

The Infrared Thermal Mapper (IRTM) was a multichannel radiometer on both the Viking 1 and Viking 2 Orbiters that measured the thermal emission from the atmosphere and the surface of Mars.

IRTM Resources

• Viking 1 Orbiter IRTM Information at the NSSDC
• Viking 2 Orbiter IRTM Information at the NSSDC

PDS Data Sets

• Viking 1/2 Orbiter IRTM resampled data of Mars
  • Order data on CD-WO from PDS Central Node

• Viking 1/2 Orbiter IRTM derived data of Mars
  • Access data on-line at PDS Atmospheres Node