The full digital image necessary for scientific analysis will be released within one year of receipt of this orbit's last data. They were acquired by NASA's Galileo spacecraft during three separate orbits of Jupiter when the moon was in Jupiter's shadow. Below them are the corresponding views of Io in reflected sunlight, reprojected from a global mosaic of images obtained during Galileo's first and second orbits of Jupiter. These lit views help to identify the locations of the hot spots seen in the eclipse images. The grid marks are at 15 degree intervals of latitude and longitude.
North is to the top.
The relatively long exposures used to obtain these eclipse images lead to some smearing of the picture elements which reduces the actual resolution. Galileo evidence for major variations in regolith properties, by D. Simonelli, J. Veverka, and A. McEwen.