Forwarded by: fwestra@...
Originally from: baalke@...
Original Subject: Mars Atlas Revisited: The MGS MOC Wide Angle Map of Mars
Original Date: Fri, 1 Feb 2002 15:56:43 -0800 (PST)
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Mars Global Surveyor
Mars Orbiter Camera
Mars Atlas Revisited: The MGS MOC Wide Angle Map of Mars
MGS MOC Release No. MOC2-299, 1 February 2002
In 1979, NASA published ATLAS OF MARS: THE 1:5,000,000 MAP SERIES, edited by
R.M. Batson, P.M. Bridges, and J.L. Inge, of the U.S. Geological Survey in
Flagstaff, Arizona. This was a compendium of airbrushed shaded relief maps,
controlled photomosaics, and in a few cases albedo (shading) maps, mostly
assembled from Mariner 9 survey images, with some gaps filled by Viking
orbiter images. The planet was divided into thirty "quadrangles" or areas,
each with an "Mars Chart" or "MC" number (MC-1 through MC-30). The
equatorial region was portrayed in the Mercator projection, with Lambert
Conformal Conic for the mid-latitudes and Polar Stereographic for the poles.
Although digital products such as the Mars Digital Image Mosaic (MDIM) and
various Mars Global Surveyor (MGS) Mars Orbiter Laser Altimeter (MOLA) maps
have partially supplanted the ATLAS, it remains a standard desktop reference
In 1999, the Mars Orbiter Camera (MOC) aboard the MGS orbiter acquired a
global stereo image dataset using its red-filter Wide Angle Camera. We have
recently completed a 256 pixel/degree (about 230 meters/pixel) mosaic of
these images using software developed at Malin Space Science Systems (MSSS).
To access both partial and full-resolution mosaics in Planetary Data System
format, CLICK HERE: http://www.msss.com/mgcwg/mgm/
The image above is a reproduction of the new MGS MOC Mars Digital Map. By
clicking on the various sections (quadrangles) of the map, one can access
the atlas at two resolutions: first a browse image at about 6 km/pixel, and
by clicking on that browse image, at a resolution of about 1 kilometer per
pixel (~0.62 miles per pixel). Each quadrangle is independently
contrast-enhanced and labeled with a 5-degree grid. This is the first of
several cartographic products that MSSS expects to release this year.
The index map can be viewed at full resolution by clicking here:
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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