HiRISE Images Mars Pathfinder Site
NASA/JPL/University of Arizona

HiRISE Images Mars Pathfinder Site
PSP_001890_1995  Science Theme: Future Exploration/Landing Sites


Pathfinder landed on Mars on July 4, 1997 and continued operating until September 27 of that year. The landing site is on an ancient flood plain of the Ares and Tiu outflow channels. The image provides unprecedented detail of the geology of the region and hardware on the surface. This release consists of six parts.

1. HiRISE Image (full image PSP_001890_1995): This is the entire HiRISE image. The crater at center bottom is "Big Crater," the wall of which was visible from Pathfinder, located 3 km to the north. The two bright features to the upper left of Big Crater are the Twin Peaks, also observed by Pathfinder. The bright mound to the upper right of the Twin Peaks is North Knob, seen in Pathfinder images as peaking over the horizon.

At this scale there is no obvious geologic evidence of an ancient flood. Rather, impact craters dominate the scene, attesting to an old surface. The age is probably on the order of 1.8-3.5 billion years, when the Ares and Tiu floods are estimated to have occurred. Wind-formed linear ripples and dunes are seen throughout and are concentrated within craters. Sets of polygonal ridges of enigmatic origin are seen east of the Pathfinder lander. Rocks are visible over the entire image, with heavy concentrations near fresh looking craters. Most of them are probably impact ejecta blocks.

2. Landing Site Region (940K): This is a close-up of the area in the vicinity of the Pathfinder landing site. Major features are named. The white box outlines the area of the image, discussed next, where hardware is seen.

3. Hardware on the Surface (5 MB): This image shows the Pathfinder lander on the surface. Zooming in, one can discern the ramps, science deck, and portions of the airbags on the Pathfinder lander (see next image, right side for greater detail). The backshell and parachute are to the south and four features that may be portions of the heat shield are identified. Two of these were visible from Pathfinder. At the time of that mission, the nearest object was provisionally identified as the back shell. However, analysis of the HiRISE image and reinterpretation of the Pathfinder images, plus an improved understanding of how hardware looks on the Martian surface based on the MER images and HiRISE images of those landing sites, indicates that the glint is bright enough that it may be the insulating material from the inside of the heat shield. The backshell and parachute were out of sight behind a ridge from Pathfinders’s ground view. One of the three bright features, identified as heathshield debris, was also identified during the Pathfinder mission.

4. Topographic Map of landing site region (11 MB): These are maps of topography near the Pathfinder lander. They were constructed by the USGS shortly after the mission from stereo images acquired by the Imager for Mars Pathfinder. The x and y axes scales are in meters. Contour interval is 0.2 m on the left, 0.1 m on the right. In each case, the corresponding portion of the HiRISE image has been superimposed on the Pathfinder-derived topographic map. The white feature at center location 0,0 is the Pathfinder lander. The correspondence between the overhead view revealed by HiRISE and the positions of topographic features inferred almost a decade ago from Pathfinder's horizontal view of the landscape is striking. The close-up on the right compliments the Gallery Pan below.

5. Mars Pathfinder Gallery Panorama (5 MB): This version of the Gallery Pan, taken with the IMP camera during the Pathfinder mission, shows many of the “end of sol” locations for Sojourner, including the last know position (i.e., there was only one Sojourner rover). Annotations show the locations of rocks and other features that can be identified in the HiRISE overhead view. The proposed current location of the Sojourner Rover is indicated. Comparing the ground view with the HiRISE image, one can identify a feature at this location that is about the right size for Sojourner and that wasn't present when the Gallery Panorama was taken.

6. Topographic perspective of landing site region (3 MB): This is a perspective view based on the topographic map and artificial color derived from Pathfinder and other data. The vertical scale is exaggerated by a factor of 3. The white feature at center is the Pathfinder lander. It appears "flat" because the topographic map derived from the Imager for Mars Pathfinder data did not include the spacecraft itself.

Written by: Nathan Bridges   (16 January 2007)

This is a stereo pair with PSP_002391_1995.

  Click to share this post on Twitter Click to share this post on Facebook Click to share this post on Google+ Click to share this post on Tumblr


 Image Products: All image links are drag & drop for HiView, or click to download
JPEG
Grayscale: map projected  non-map
IRB color: map projected  non-map
Merged IRB: map projected
Merged RGB: map projected
RGB color: non-map projected

JP2 DOWNLOAD
Grayscale: map-projected (1040.5 MB)
IRB color: map-projected (472.5 MB)

JP2 EXTRAS
Grayscale: map-projected  (447.6 MB),
non-map  (557.6 MB)
IRB color: map projected  (165.5 MB)
non-map  (402.3 MB)
Merged IRB: map projected  (262.8 MB)
Merged RGB: map-projected  (269.5 MB)
RGB color: non map-projected  (390.7 MB)

ANAGLYPHS
Map-projected reduced-resolution (PNG)
Full resolution JP2 download
View anaglyph details page

ADDITIONAL IMAGE INFORMATION
Grayscale label   Color label
Merged IRB label   Merged RGB label
EDR products

About color products (PDF)
HiView main page

 Observation Toolbox
Acquisition date:21 December 2006 Local Mars time: 3:35 PM
Latitude (centered):19.086° Longitude (East):326.763°
Range to target site:284.7 km (177.9 miles)Original image scale range:28.5 cm/pixel (with 1 x 1 binning) so objects ~85 cm across are resolved
Map projected scale:25 cm/pixel and North is upMap projection:Equirectangular
Emission angle:6.3° Phase angle:46.2°
Solar incidence angle:52°, with the Sun about 38° above the horizon Solar longitude:154.0°, Northern Summer
For non-map projected products:
North azimuth:97° Sub-solar azimuth:5.3°
For map-projected products
North azimuth:270°Sub solar azimuth:179.0°

Context map

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.