Sample Tharsis Tholus Caldera Wall
NASA/JPL/UArizona
Sample Tharsis Tholus Caldera Wall
PSP_002169_1940  Science Theme: Volcanic Processes
This image captures one of the cleaner portions of the interior wall of the caldera at the top of Tharsis Tholus.

Tharsis Tholus is an intermediate sized shield volcano, much smaller than giants such as Olympus Mons, but still large by terrestrial standards. While relatively dust-free, this section of the caldera wall is still extensively covered by dust that is being sculpted into curious shapes by the wind and by gravity.



Written by: Laszlo Kestay  (7 March 2007)
 
Acquisition date
12 January 2007

Local Mars time
15:33

Latitude (centered)
13.575°

Longitude (East)
268.761°

Spacecraft altitude
271.3 km (168.6 miles)

Original image scale range
54.9 cm/pixel (with 2 x 2 binning) so objects ~165 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
13.3°

Phase angle
66.2°

Solar incidence angle
53°, with the Sun about 37° above the horizon

Solar longitude
165.5°, Northern Summer

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  4.3°
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   (107MB)

IRB color
map-projected   (64MB)

JP2 EXTRAS
Black and white
map-projected  (49MB)
non-map           (57MB)

IRB color
map projected  (16MB)
non-map           (52MB)

Merged IRB
map projected  (87MB)

Merged RGB
map-projected  (89MB)

RGB color
non map           (49MB)
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.