Crossing Spheres

Caption originale:"Dione steps in front of Tethys for a few minutes in an occultation - or "mutual event". These events occur frequently for the Cassini spacecraft when it is orbiting close to the Ring-Plane.

The image was taken in visible red light with the Cassini spacecraft narrow-angle camera on Feb. 10, 2006, at a distance of approx. 3,7 MKM(such as about 2,3 MMs) from Dione and approx. 4 MKM (about 2,5 MMs) from Tethys. Resolution in the original image was about 22 Km (approx. 14 miles) per pixel on Dione and about 24 Km (approx. 15 miles) per pixel on Tethys.
The image has been magnified by a factor of two.