PIA07621: Tethys Meets Dione
This image from NASA's Cassini spacecraft shows Saturn's moon Tethys partially occulting the moon Dione. The difference in the surface brightness of the two moons is immediately apparent.
 Target Name:  Tethys
 Is a satellite of:  Saturn
 Mission:  Cassini-Huygens 
 Spacecraft:  Cassini Orbiter
 Instrument:  ISS - Narrow Angle 
 Product Size:  444 x 536 pixels (w x h) 
 Produced By:  Cassini Imaging Team 
 Primary Data Set:  Cassini 
 Full-Res TIFF:  PIA07621.tif (238.5 kB)
 Full-Res JPEG:  PIA07621.jpg (6.945 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 image shows Saturn's moon Tethys partially occulting the moon Dione. The difference in the surface brightness of the two moons is immediately apparent.

The diameter of Tethys is 1,071 kilometers (665 miles), while Dione is 1,126 kilometers (700 miles) across.

This still image was acquired on Sept. 16, 2005, at a distance of 2.1 million kilometers (1.3 million miles) from Dione and 2.7 million kilometers (1.7 million miles) from Tethys. Resolution in the original images was 13 kilometers (8 miles) per pixel on Dione and 16 kilometers (10 miles) per pixel on Tethys. The still image was magnified by a factor of two to aid visibility of surface features.

A brief movie of is also available (see PIA07620).

Image Credit:
NASA/JPL/Space Science Institute

Image Addition Date:
2005-11-01