Physics – Optics
Scientific paper
Jan 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976aiaa.meets....w&link_type=abstract
American Institute of Aeronautics and Astronautics, Aerospace Sciences Meeting, 14th, Washington, D.C., Jan. 26-28, 1976, 13 p.
Physics
Optics
Imaging Techniques, Mars Photographs, Vidicons, Viking Orbiter 1, Viking Orbiter 2, Visual Photometry, Electro-Optics, Light Transmission, Mars Surface, Performance Prediction, Spatial Filtering, Television Cameras, Viking Lander 1, Viking Lander 2
Scientific paper
Two Viking spacecraft each consisting of an Orbiter and a Lander are on trajectories toward Mars with arrival dates in June and August 1976. A Visual Imaging Subsystem consisting of two slow-scan television cameras forms part of the scientific payload of each Orbiter. These cameras will be used to evaluate the potential landing sites on Mars and to conduct other scientific investigations of the planet. The camera system described in this paper was subjected to an extensive test and calibration program prior to launch. Based on this calibration and subsequent analyses, absolute photometric accuracies of 8.0% may be achieved. Surface resolution exceeding 100 meters will be achieved from the periapsis portion of the Viking orbits. The inherent geometric accuracies of the Orbiter cameras supersede those of previous planetary missions. The analyses of images acquired during the cruise phase of the mission confirms that the cameras have survived the rigors of launch and are performing in a manner consistent with the prelaunch calibrations.
Landauer F. P.
Norris David D.
Thorpe Thomas E.
Wellman John B.
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