Brain-Coral Texture on Crater Floor
Brain-Coral Texture on Crater Floor
ESP_023649_1360  Science Theme: Glacial/Periglacial Processes
This crater floor has a hummocky texture ("brain-coral"-like), and curved structures, possibly from glacial-like flow.

What's of note is how HiRISE plans certain observations--like this one--where anywhere in the area is likely to be interesting enough for an image. This is unlike other observations where the planning needs a precisely-targeted area to capture a specific feature of interest. We call this an "NIO," or non-interactive observation.

This caption is based on the original science rationale.

Written by: HiRISE Science Team  (4 October 2011)
Acquisition date
13 August 2011

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
249.4 km (155.0 miles)

Original image scale range
24.9 cm/pixel (with 1 x 1 binning) so objects ~75 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
48°, with the Sun about 42° above the horizon

Solar longitude
343.9°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  45.6°
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

Black and white
map-projected   (575MB)

IRB color
map-projected   (309MB)

Black and white
map-projected  (236MB)
non-map           (366MB)

IRB color
map projected  (76MB)
non-map           (277MB)

Merged IRB
map projected  (151MB)

Merged RGB
map-projected  (146MB)

RGB color
non map           (279MB)
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products

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

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

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.