Thursday, May 12, 2005

New Cassini Image: Pair to Compare

CICLOPS has released this view of Dione (top) and Tethys (bottom), as viewed in the same narrow-angle camera field-of-view on March 19 of this year. In this case, we are looking at the trailing hemispheres of both moons. The trailing hemisphere of Dione is quite different from its leading hemisphere, which bears the famous wispy markings. This hemisphere instead shows only craters. However, it doesn't appear as heavily cratered as the trailing hemisphere of Tethys. This view of Tethys highlights the Odysseus (1:30 position) and Melanthius (6 o'clock) impact basins. For both moons, the pixel scale is 15 km/pixel.


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