Odyssey Thermal Emission Imaging System (THEMIS)
ODE: Mars
Mission: Odyssey
PDS Information: PDS THEMIS Data Node and Instrument Web Site
PDS Archives: PDS Archive
Search 2001 Mars Odyssey THEMIS data in Mars ODE: Product Search • Map Search
The Thermal Emission Imaging System (THEMIS) is an instrument on board the Mars Odyssey spacecraft. It combines a 5-wavelength visual imaging system with a 9-wavelength infrared imaging system.
THEMIS is a multi-wavelength camera:
5 visual bands:
0.425 microns, 0.540 microns, 0.654 microns, 0.749 microns, 0.860 microns
10 infrared bands:
6.78 microns (used twice), 7.93 microns, 8.56 microns, 9.35 microns,10.21 microns, 11.04 microns, 11.79 microns, 12.57 microns, 14.88 microns
Resolution:
visual images, 59 feet (18 meters) per pixel
infrared images, 328 feet (100 meters) per pixel
THEMIS Standard Data Products (ODTSDP Volume)
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Type |
Description |
Data Set |
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Infrared brightness temperature records - derived from corresponding IRRDR band IR-9 or first available band. Please see the Product SIS for more information. |
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Infrared Experiment Data Records - Spectral image QUBEs consisting of one layer per infrared band collected. Please see the Product SIS for more information. |
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Infrared Reduced Data Records - Radiometrically calibrated spectral image QUBEs consisting of one layer per infrared band collected. Please see the Product SIS for more information. |
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Visible apparent brightness records - derived from corresponding VISRDR band V-3 or the first available band. Please see the Product SIS for more information. |
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Visible Experiment Data Records - Spectral image QUBEs consisting of one layer per visible band collected. Please see the Product SIS for more information. |
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Visible Reduced Data Records - Radiometrically calibrated spectral image QUBEs consisting of one layer per visible band collected. Please see the Product SIS for more information. |
THEMIS Projected Data Products (ODTGEO Volume)
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Type |
Description |
Data Set |
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Infrared geometry products processed by ISIS version 2.0. This product contains geometrically registered and atmospherically corrected calibrated radiance. Please see the THEMIS Geometric Processing User’s Guide for more information. |
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Infrared derived geometry products - one band IMAGE file generated by additional processing of the IRGEO products using ISIS version 2.0. Please see the THEMIS Geometric Processing User’s Guide for more information. |
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Visible geometry products processed by ISIS version 2.0. Please see the THEMIS Geometric Processing User’s Guide for more information. |
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Infrared geometry products processed by ISIS version 3.0. This product contains geometrically registered and atmospherically corrected calibrated radiance. Please see the THEMIS Geometric Processing User’s Guide for more information. |
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Infrared derived geometry products - one band IMAGE file generated by additional processing of the IRGEO products using ISIS version 3.0. Please see the THEMIS Geometric Processing User’s Guide for more information. |
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Visible geometry products processed by ISIS version 3.0. Please see the THEMIS Geometric Processing User’s Guide for more information. |
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Visible derived geometry products - one band IMAGE file generated by additional processing of the VISGEO products using ISIS version 3.0 Please see the THEMIS Geometric Processing User’s Guide for more information. |
Additional Resources:
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Davinci - Arizona State University (ASU) software for processing THEMIS data. Davinci is an interpreted language that looks and feels a lot like C, but has additional vector oriented features that make working with blocks of data a lot easier. This makes daVinci well suited for use as a data processing tool, allowing symbolic and mathematical manipulation of hyperspectral data for imaging spectroscopy applications.
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THEMIS Web-based Processing Interface (THMPROC) - THMPROC is a web-based processing system provided by the THEMIS Data Node at Arizona State University (ASU) that allows users to log on and submit processing requests for creating THEMIS data products. The processing occurs remotely at ASU and users must first register for a free username and password. Map-projected output images include emissivity, temperature, and radiance data and a variety of stretches may be used. Register here.