Official softcover bracket-bound report from the Jet Propulsion Laboratory entitled "Preliminary Design Review, Mars Atmospheric Water Detector Subsystem, Viking Orbiter 1975," 9 x 11, extensively documenting the Mars Atmospheric Water Detector (MAWD) instrument with summaries of its functional requirements, systems, and specifications, plus a multitude of fold-out engineering drawings and schematics of the device and its various components. In fine condition.
The MAWD used an infrared grating spectrometer mounted on the orbiter scan platform that was boresighted with the Viking Orbiter's television cameras and the Infrared Thermal Mapper (IRTM). The instrument measured solar infrared radiation reflected from the surface through the atmosphere to the spacecraft. The objective of the MAWD investigation was to map the atmospheric water vapor over potential Martian landing sites and other portions of the planet, and to provide information of diurnal and seasonal changes in humidity.
