CICLOPS: Cassini Imaging Central Laboratory for OPerationS

Slicing Through Dione
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Dione is partly occulted by Saturn's rings in this nearly edge-on view, taken from less than a tenth of a degree above the ringplane. The side of the rings nearer to Cassini was masked by Saturn's shadow at the time and appears dark.

Bright, wispy fractures on Dione's trailing hemisphere curl around the horizon. Sunlit terrain seen on Dione (1,123 kilometers, 698 miles across) is on the moon's Saturn-facing hemisphere. North is up.

The image was taken in infrared light (centered at 752 nanometers) with the Cassini spacecraft narrow-angle camera on Nov. 3, 2005 at a distance of approximately 2.5 million kilometers (1.5 million miles) from Dione and at a Sun-Dione-spacecraft, or phase, angle of 109 degrees. Resolution in the original image was 15 kilometers (9 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: December 22, 2005 (PIA 07658)
Image/Caption Information
  Slicing Through Dione
PIA 07658

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