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NASA Mars Odyssey THEMIS Image: Kaiser Crater DCS

Status Report From: Mars Odyssey THEMIS
Posted: Friday, July 30, 2004

Medium image for 20040729A
Image Context:
Context image for 20040729A
Context image credit: NASA/Mars Orbiter Laser Altimeter (MOLA) Team
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ParameterValue ParameterValue
Latitude-46.5   InstrumentIR
Longitude20.3E (339.7W)   Resolution (m)100
Image Size (pixels)1530x320   Image Size (km)153x0.3

This image is part of the following themes:

Full data on this image has now been released via the THEMIS Data Releases website.

This image shows two representations of the same infra-red image covering a portion of Kaiser Crater. On the left is a grayscale image showing surface temperature, and on the right is a false-color composite made from 3 individual THEMIS bands. The false-color image is colorized using a technique called decorrelation stretch (DCS), which emphasizes the spectral differences between the bands to highlight compositional variations.

In this image, the basaltic sand dunes in bottom of Kaiser crater are colored a bright pink/magenta. The spectral features are clean and prominent on these dust-free surfaces and the dark color of the basaltic dunes helps them to absorb sunlight and produces higher surface temperatures, which also contributes to the image colors.

[Source: ASU THEMIS Science Team]

Note: this THEMIS infrared image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time.

NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.

Image Credit: NASA/JPL/Arizona State University


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