PIA00992: Valles Marineris
 Target Name:  Mars
 Is a satellite of:  Sol (our sun)
 Mission:  Mars Global Surveyor (MGS)
 Spacecraft:  Mars Global Surveyor Orbiter
 Instrument:  Mars Orbiter Camera (MOC)
 Product Size:  1023 x 608 pixels (w x h)
 Produced By:  Malin Space Science Systems
 Producer ID:  MOC2-13A MOC2-13B MRPS85057
 Addition Date:  1997-10-15
 Primary Data Set:  MGS EDRs
 Full-Res TIFF:  PIA00992.tif (956.1 kB)
 Full-Res JPEG:  PIA00992.jpg (68.46 kB)

Click on the image above to download a moderately sized image in JPEG format (possibly reduced in size from original)

Original Caption Released with Image:

MOC images P013_01 and P013_02 were acquired with the low resolution red and blue wide angle cameras at 2:14 PM PDT on October 3, 1997, about 11 minutes after Mars Global Surveyor passed close to the planet for the thirteenth time. To make a color image, a third component (green) was synthesized from the red and blue images. During the imaging period, the spacecraft was canted towards the sun-lit hemisphere by 25, and the MOC was obliquely viewing features from about 600 to 1000 km (360 to 600 miles) away. The resolution at those distances was between 350 and 600 meters (0.25 to 0.37 miles) per picture element. The image covers an area from 73 to 86 W longitude and 5 N to 10 S).

In both of the two images shown above, north is to the top. In the MOC image, the camera was viewing towards the west.

The left image is excepted from a U.S. Geological Survey shaded relief map, showing the footprint of the MOC wide angle color image. The large canyon system (Valles Marineris) spans this view; chaotic terrain is seen at the far right and the eastern-most of the four large Tharsis volcanoes (Ascraeus Mons) is shown in upper left.

The right image is the composite of MOC frames P013_01 and P013_02. Because the MOC acquires its images one line at a time, the cant angle towards the sun-lit portion of the planet, the spacecraft orbital velocity, and the spacecraft rotational velocity combine to distort the image slightly. However, the wide angle cameras provide a fairly realistic portrayal of what one would see looking out across Mars from the Orbiter. Notable in this image are the late afternoon clouds and hazes that are concentrated within the canyon system. This image is available at higher resolution as PIA00991.

Launched on November 7, 1996, Mars Global Surveyor entered Mars orbit on Thursday, September 11, 1997. From the planned 400 km (248 mi) orbit altitude, MOC wide angle images will be 2-4 times higher resolution than these pictures.

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.

Image Credit:
NASA/JPL/Malin Space Science Systems

Image Addition Date: