CICLOPS: Cassini Imaging Central Laboratory for OPerationS
Grim Tethys

The profile of Ithaca Chasma forms a great scar in the icy crescent of Tethys (1,062 kilometers, 660 miles across). The chasm stretches more than 1,000 kilometers (620 miles) over Tethys' surface, from north to south.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Dec. 25, 2005 at a distance of approximately 313,000 kilometers (195,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 151 degrees. Image scale is 2 kilometers (1 mile) per pixel. North on Tethys is up in this view.

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: February 9, 2006 (PIA 07698)
Image/Caption Information
  Grim Tethys
PIA 07698

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