Eye of the Beholder
NASA/JPL/University of Arizona
Eye of the Beholder
ESP_028957_2085  Science Theme: Sedimentary/Layering Processes
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Nilosyrtis Mensae is an ancient terrain with a wonderful variety of landforms and rock types.

What is this circular landform? It probably got its shape from an impact crater long ago, but was subsequently eroded and filled in and eroded again, so that now it is a low mesa surrounded by a boulder-rich geologic unit.

Written by: Alfred McEwen (audio by Tre Gibbs)  (24 October 2012)

This is a stereo pair with ESP_046772_2085.
 
Acquisition date
29 September 2012

Local Mars time
15:34

Latitude (centered)
28.286°

Longitude (East)
75.424°

Spacecraft altitude
285.5 km (177.4 miles)

Original image scale range
28.8 cm/pixel (with 1 x 1 binning) so objects ~86 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
8.5°

Phase angle
50.4°

Solar incidence angle
59°, with the Sun about 31° above the horizon

Solar longitude
180.1°, Northern Autumn

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  345.5°
JPEG
Black and white
map projected  non-map

IRB color
map projected  non-map

Merged IRB
map projected

Merged RGB
map projected

RGB color
non-map projected

JP2
Black and white
map-projected   (1449MB)

IRB color
map-projected   (819MB)

JP2 EXTRAS
Black and white
map-projected  (767MB)
non-map           (665MB)

IRB color
map projected  (255MB)
non-map           (580MB)

Merged IRB
map projected  (378MB)

Merged RGB
map-projected  (363MB)

RGB color
non map           (579MB)
ANAGLYPHS
Map-projected, reduced-resolution
Full resolution JP2 download
Anaglyph details page

ADDITIONAL INFORMATION
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products
HiView

NB
IRB: infrared-red-blue
RGB: red-green-blue
About color products (PDF)

Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images

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:
NASA/JPL/University of Arizona

POSTSCRIPT
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. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona.