Ada Crater is a fresh (recently-formed) impact crater formed close to the southern edge of Meridiani Planum, far to the southeast of the Opportunity rover.

Shown here are two red-blue color anaglyphs in which you can view the topography with red-blue glasses (blue filter over your right eye). The first one covers the crater and shows a relatively large area but with 3x reduction of spatial scale (75 cm/pixel). The crater looks extremely deep, but that impression is greatly exaggerated! We acquire stereo pairs with separation angles much greater than that of our own eyes, in order to extract for accurate measurements.

But the effect on color anaglyphs is to exaggerate the relief, which can be vertigo-inducing over steep terrain.

The second anaglyph covers a portion of the ejecta blanket at full resolution (9 MB). Here the vertical exaggeration is quite helpful to visualize the subtle undulations.

(We previously released image PSP_1348_1770, but acquired a later image (PSP_1678_1770) over this same area but from a different viewing angle to provide stereo coverage.)

Written by: Alfred McEwen

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

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.