File:Tempe Fossae - False Color (PIA26125).jpg

Original file(621 × 2,697 pixels, file size: 112 KB, MIME type: image/jpeg)

Captions

Captions

The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image.

Summary edit

Description
English: The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. These false color images may reveal subtle variations of the surface not easily identified in a single band image. Today's false color image shows a small portion of Tempe Fossae. The linear features are tectonic graben. Graben are formed by extension of the crust and faulting. When large amounts of pressure or tension are applied to rocks on timescales that are fast enough that the rock cannot respond by deforming, the rock breaks along faults. In the case of a graben, two parallel faults are formed by extension of the crust and the rock in between the faults drops downward into the space created by the extension. The complete fossae system in almost 2000 km (1242 miles) long. The THEMIS VIS camera is capable of capturing color images of the Martian surface using five different color filters. In this mode of operation, the spatial resolution and coverage of the image must be reduced to accommodate the additional data volume produced from using 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 intensity 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. Orbit Number: 94065 Latitude: 46.5357 Longitude: 293.867 Instrument: VIS Captured: 2023-02-27 15:03 https://photojournal.jpl.nasa.gov/catalog/PIA26125
Date Taken on 8 September 2023
Source
This image or video was catalogued by Jet Propulsion Laboratory of the United States National Aeronautics and Space Administration (NASA) under Photo ID: PIA26125.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.
Other languages:
Author NASA Jet Propulsion Laboratory / NASA/JPL-Caltech/ASU

Licensing edit

Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
Warnings:

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current01:39, 5 December 2023Thumbnail for version as of 01:39, 5 December 2023621 × 2,697 (112 KB)OptimusPrimeBot (talk | contribs)#Spacemedia - Upload of http://images-assets.nasa.gov/image/PIA26125/PIA26125~orig.jpg via Commons:Spacemedia

There are no pages that use this file.