Tethys and Dione

Original caption:"This image shows Tethys partially occulting Dione. For comparison purposes, we remind you that the diameter of Tethys is 1.071 Km (about 665 miles), while Dione is 1.126 Km (such as about 700 miles) across; the difference in the surface brightness of the two moons is immediately apparent.

This still image was acquired on Sept. 16, 2005, at a distance of 2,1 MKM (such as about 1,3 MMs) from Dione and 2,7 MKM (about 1,7 MMs) from Tethys. Resolution in the original images was 13 Km (approx. 8 miles) per pixel on Dione and 16 Km (approx. 10 miles) per pixel on Tethys.
The image was magnified by a factor of two to aid visibility of surface features".