CICLOPS: Cassini Imaging Central Laboratory for OPerationS
Slice of Tethys

This Cassini view of Tethys (1,062 kilometers, 660 miles across) shows several large craters near the moon's eastern limb. These craters have fanciful names such as Phemius, Polyphemus and Ajax. The moon's massive rift-like canyon system, Ithaca Chasma, is in the darkness to the west.

The image has been rotated so that north on Tethys is up. This view shows principally the moon's trailing hemisphere.

The image was taken in visible blue light with the narrow angle camera on January 19, 2005, from a distance of approximately 1.9 million kilometers (1.2 million miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 111 degrees. Resolution in the original image was 11 kilometers (7 miles) per pixel. The image has been contrast-enhanced and magnified by a factor of two to aid visibility.

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 22, 2005 (PIA 06590)
Image/Caption Information
  Slice of Tethys
PIA 06590

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