Odyssey Thermal Emission Imaging System (THEMIS)

ODE: Mars

Mission: Odyssey

PDS Information: PDS THEMIS Data Node and Instrument Web Site

PDS Archives: PDS Archive

Odyssey THEMIS PDS3 to PDS4 Migration Status: In progress

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 Data Products (urn:nasa:pds:ody.themis.sdp and urn:nasa:pds:ody.themis.geo bundles) that use the PDS4 standard:

Processing Level	Type	Description	PDS4 Collection
Raw Data	IREDR4	Infrared Experiment Data Records - Spectral image QUBEs consisting of one layer per infrared band collected. Please see the Product SIS for more information.	urn:nasa:pds:ody.themis.sdp:data_iredr
	VISEDR4	Visible Experiment Data Records - Spectral image QUBEs consisting of one layer per visible band collected. Please see the Product SIS for more information.	urn:nasa:pds:ody.themis.sdp:data_visedr
Calibrated Data	IRRDR4	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.	urn:nasa:pds:ody.themis.sdp:data_irrdr
	VISRDR4	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.	urn:nasa:pds:ody.themis.sdp:data_visrdr
Derived Data	IRBTR4	Infrared brightness temperature records - derived from corresponding IRRDR band IR-9 or first available band. Please see the Product SIS for more information.	urn:nasa:pds:ody.themis.sdp:data_irbtr
	IRGEO4	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.	urn:nasa:pds:ody.themis.geo:data_irgeo
	IRPBT4	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.	urn:nasa:pds:ody.themis.geo:data_irpbt
	VISABR4	Visible apparent brightness records - derived from corresponding VISRDR band V-3 or the first available band. Please see the Product SIS for more information.	urn:nasa:pds:ody.themis.sdp:data_visabr
	VGEO4	Visible geometry products processed by ISIS version 3.0. Please see the THEMIS Geometric Processing User’s Guide for more information.	urn:nasa:pds:ody.themis.geo:data_visgeo
	VISALB4	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.	urn:nasa:pds:ody.themis.geo:data_visalb

THEMIS Standard Data Products (ODTSDP Volume) that use the PDS3 standard:

Type	Description	Data Set
IRBTR	Infrared brightness temperature records - derived from corresponding IRRDR band IR-9 or first available band. Please see the Product SIS for more information.	ODY-M-THM-3-IRBTR-V1.0
IREDR	Infrared Experiment Data Records - Spectral image QUBEs consisting of one layer per infrared band collected. Please see the Product SIS for more information.	ODY-M-THM-2-IREDR-V1.0
IRRDR	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.	ODY-M-THM-3-IRRDR-V1.0
VISABR	Visible apparent brightness records - derived from corresponding VISRDR band V-3 or the first available band. Please see the Product SIS for more information.	ODY-M-THM-3-VISABR-V1.0
VISEDR	Visible Experiment Data Records - Spectral image QUBEs consisting of one layer per visible band collected. Please see the Product SIS for more information.	ODY-M-THM-2-VISEDR-V1.0
VISRDR	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.	ODY-M-THM-3-VISRDR-V1.0

THEMIS Projected Data Products (ODTGEO Volume) that use the PDS3 standard:

Type	Description	Data Set
IRGEO1	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.	ODY-M-THM-5-IRGEO-V1.0
IRPBT1	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.	ODY-M-THM-5-IRPBT-V1.0
VGEO1	Visible geometry products processed by ISIS version 2.0. Please see the THEMIS Geometric Processing User’s Guide for more information.	ODY-M-THM-5-VISGEO-V1.0
IRGEO2	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.	ODY-M-THM-5-IRGEO-V2.0
IRPBT2	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.	ODY-M-THM-5-IRPBT-V2.0
VGEO2	Visible geometry products processed by ISIS version 3.0. Please see the THEMIS Geometric Processing User’s Guide for more information.	ODY-M-THM-5-VISGEO-V2.0
VISALB	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.	ODY-M-THM-5-VISALB-V2.0

Additional Resources:

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.
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.