CICLOPS: Cassini Imaging Central Laboratory for OPerationS
Shepherd of Ice

The shepherd moon Prometheus (86 kilometers, 53 miles across) hovers between the A and F rings as if suspended on an invisible thread, while bright clouds drift in Saturn's atmosphere approximately 130,000 kilometers (81,000 miles) beyond. It is noteworthy that such clouds are visible here in the shadows cast by the rings.

The image was taken in visible light with the narrow angle camera on June 3, 2005, from a distance of approximately 2.1 million kilometers (1.3 million miles) from Saturn. The image scale is 13 kilometers (8 miles) per pixel. This view was processed to enhance fine details.

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: July 13, 2005 (PIA 07541)
Image/Caption Information
  Shepherd of Ice
PIA 07541

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