CICLOPS: Cassini Imaging Central Laboratory for OPerationS

Rough Sphere of Tethys
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The Sun's rays strike the terrains near the terminator on Tethys at low angles, throwing features there into sharp relief. The cluster of peaks at the center of the crater Odysseus (450 kilometers or 280 miles across) is particularly bold. Melanthius crater is seen here at bottom.

This view shows the anti-Saturn hemisphere on Tethys (1,062 kilometers, 660 miles across). North is up and rotated 20 degrees to the left. Saturn's rings cut across the upper left portion of the scene.

The image was taken in visible green light with the Cassini narrow-angle camera on Oct. 13, 2005 at a distance of approximately 646,000 kilometers (401,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 109 degrees. The image scale is 4 kilometers (2 miles) per pixel.

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Cassini-Huygens mission for NASA's Science Mission Directorate, Washington, D.C. The imaging team consists of scientists from the US, England, France, and Germany. The imaging operations center and team lead (Dr. C. Porco) are based at the Space Science Institute in Boulder, Colo.

For more information about the Cassini-Huygens mission, visit and the Cassini imaging team home page,

Credit: NASA/JPL/Space Science Institute
Released: November 28, 2005 (PIA 07640)
Image/Caption Information
  Rough Sphere of Tethys
PIA 07640

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