HiRISE | Seasonal Sublimation Process / Spider Evolution (PSP_003720

NASA/JPL/University of Arizona

Seasonal Sublimation Process / Spider Evolution
PSP_003720_0930 Science Theme: Seasonal Processes

This is a stereo pair with PSP_003087_0930.

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Grayscale: map-projected (746.5 MB)
IRB color: map-projected (340.8 MB)

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Grayscale: map-projected (462.9 MB),
non-map (500.9 MB)

IRB color: map projected (147.3 MB)
non-map (386.2 MB)

RGB color: non map-projected (370.9 MB)

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Acquisition date:	13 May 2007	Local Mars time:	8:10 PM
Latitude (centered):	-87.1 degrees	Longitude (East):	126.2 degrees
Range to target site:	244.7 km (152.9 miles)	Original image scale range:	24.5 cm/pixel (with 1 x 1 binning) so objects ~73 cm across are resolved
Map projected scale:	25 cm/pixel	Map projection:	POLAR STEREOGRAPHIC
Emission angle:	0.4 degrees	Phase angle:	70.4 degrees
Solar incidence angle:	71 degrees, with the Sun about 19 degrees above the horizon	Solar longitude:	237.0 degrees, Northern Autumn
For non-map projected products:
North azimuth:	226 degrees	Sub-solar azimuth:	36.7 degrees
For map-projected products
North azimuth:	36.21 degrees	Sub solar azimuth:	272.7 degrees

Usage Policy
All of the images produced by HiRISE and accessible on this site are within the public domain: there are no restrictions on their usage by anyone in the public, including news or science organizations. We do ask for a credit line where possible: Image: NASA/JPL/University of Arizona

Postscript
For information about NASA and agency programs on the Web, visit: http://www.nasa.gov. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems is the prime contractor for the project and built the spacecraft. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona. The image data were processed using the U.S. Geological Survey’s ISIS3 software.