Scaled Image

Image Credit: NASA/JPL/ASU

About this image

This image was collected January 29, 2004 during southern summer season. The local time at the image location was about 4 pm. The image shows an area in the Ceti Mensa region.
The THEMIS VIS camera is capable of capturing color images of the martian surface using its five different color fil- ters. In this mode of operation, the spatial resolution and coverage of the image must be reduced to accommodate the additional data volume produced from the use of multiple filters. To make a color image, three of the five filter images (each in grayscale) are selected. Each is contrast enhanced and then converted to a red, green, or blue inten- sity image. These three images are then combined to produce a full color, single image. Because the THEMIS color filters don't span the full range of colors seen by the human eye, a color THEMIS image does not represent true color. Also, because each single-filter image is contrast enhanced before inclusion in the three-color image, the apparent color variation of the scene is exaggerated. Nevertheless, the color variation that does appear is representative of some change in color, however subtle, in the actual scene. Note that the long edges of THEMIS color images typically contain color artifacts that do not represent surface variation.

Please see the THEMIS Data Citation Note for details on crediting THEMIS images. 

Context

Image ID: 
V09428001 (View data in Mars Image Explorer)
-5.197
283.582
9428
2004-01-29 08:22
Tue, 2004-06-01
VIS
512 pixels (18 km)
1824 pixels (63 km)
0.034809 km/pixel
0.035254 km/pixel

Downloads

PNG | JPEG (high res) | JPEG (reduced res) | PDF | TIFF