Mission Information

Currently the only way for the public to target a THEMIS image is through the MSIP education project. The MSIP project is open to groups of students in grades 5 through college sophomore.

JPL provideds a subscription service that will notify you weekly of the new THEMIS daily images and quarterly of new data releases. You may also select to receive Press Releases for a variety of other NASA space topics. You can sign up for the service through http://www.kintera.org

The schedule of previously released data is available here. In general, new data is released six months after ground receipt of the last raw data within each three month collection period:

Data Collection == Released

Jan–Mar (Year1) == Oct Year1

Apr–Jun (Year1) == Jan Year2

Jul–Sept (Year1) == April Year2

Oct–Dec (Year1) == July Year2

The IR bands (1-10) used by THEMIS are centered at the following wavelengths (in microns):

6.78, 6.78, 7.93, 8.56, 9.35, 10.21, 11.04, 11.79, 12.57, 14.88

(Yes, the first two filters have the same spectral center.)

The VIS bands (1-5) used by THEMIS are centered at the following wavelengths (in microns):

0.425, 0.540, 0.654, 0.749, 0.860

THEMIS is a thermal emission imaging system. It contains two independent multi-spectral imaging sub-systems:

IR = a 10-band thermal infrared imager
VIS = a 5-band visible imager

A full description of the THEMIS instrument and a tutorial on spectroscopy is available here.