The Floor of Beer Crater
The Floor of Beer Crater
ESP_025136_1650  Science Theme: Landscape Evolution
This crater was named after German astronomer Wilhelm Beer. It is an ancient crater more than 100 kilometers across, located south of Meridiani Planum.

A full-resolution color sample shows fractured bedrock with dark sand filling low areas. The circular rocky features are probably eroded impact craters and the thin linear features are windblown deposits.

The aeolian (wind) erosion and modification of this ancient surface make it difficult to deduce how the rocks were initially emplaced, but the channeled rims suggest that these could be alluvial fans: deposits carried by flowing water (probably not beer).

Written by: Alfred McEwen  (9 December 2011)
Acquisition date
07 December 2011

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
264.0 km (164.1 miles)

Original image scale range
52.8 cm/pixel (with 2 x 2 binning) so objects ~158 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
52°, with the Sun about 38° above the horizon

Solar longitude
39.8°, Northern Spring

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  40.9°
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   (419MB)

IRB color
map-projected   (244MB)

Black and white
map-projected  (229MB)
non-map           (222MB)

IRB color
map projected  (100MB)
non-map           (251MB)

Merged IRB
map projected  (412MB)

Merged RGB
map-projected  (407MB)

RGB color
non map           (234MB)
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’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.