PIA12227: Cassini and Chandrayaan-1 Agree
Target Name: Moon
Is a satellite of: Earth
Mission: Cassini-Huygens
Chandrayaan-1
Spacecraft: Cassini
Chandrayaan-1
Instrument: Moon Mineralogy Mapper
VIMS
Product Size: 1410 x 1120 pixels (width x height)
Produced By: JPL
Full-Res TIFF: PIA12227.tif (4.747 MB)
Full-Res JPEG: PIA12227.jpg (159.6 kB)

Click on the image above to download a moderately sized image in JPEG format (possibly reduced in size from original)

Original Caption Released with Image:

This graph compares detailed measurements of light from the moon, called spectra, taken by the Visual and Infrared Mapping Spectrometer (VIMS) on NASA's Cassini spacecraft and NASA's Moon Mineralogy Mapper instrument on the Indian Space Research Organization's Chandrayaan-1 spacecraft.

The agreement between the two spacecraft is an excellent confirmation of the existence of water and hydroxyl (gray regions on the graph where wavelengths of infrared light range from 2.7 to 3.2 micrometers).

The red dashed lines show the thermal emission, or heat, from the moon, which must be removed to better see the signature of water. The solid lines are the spectra after this thermal emission was removed.

Image Credit:
NASA/ISRO/JPL-Caltech/USGS/Brown Univ.

Image Addition Date:
2009-09-24