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Mars Global Surveyor
Mars Orbiter Camera

North Polar Region Dunes Focus Test Image

MGS MOC Release No. MOC2-84, 10 March 1999

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During the Mars Orbiter Camera (MOC) focus and calibration testing period in the first week of March 1999, small pictures of surfaces in the north polar region were used to check the quality of each change in the camera's focus. Some of these pictures showed the north polar permanent ice cap, while others provided a close-up view of some of the dark sand dunes that surround the north polar region. This picture shows the best example. The dunes here are dark and their slip faces--the steep slope on the dune's lee side--is on the left of each dune, indicating wind transport from right to left in this particular location. The substrate between the dunes is bright and has a rough, bumpy texture. The picture covers an area 1000 meters (1094 yards) by 400 meters (437 yards). Illumination is from the lower right.


Malin Space Science Systems and the California Institute of Technology built the MOC using spare hardware from the Mars Observer mission. MSSS operates the camera from its facilities in San Diego, CA. The Jet Propulsion Laboratory's Mars Surveyor Operations Project operates the Mars Global Surveyor spacecraft with its industrial partner, Lockheed Martin Astronautics, from facilities in Pasadena, CA and Denver, CO.

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