CICLOPS: Cassini Imaging Central Laboratory for OPerationS
Ring Herders

Both of Saturn's F-ring shepherd moons are seen in this Cassini view, which also features narrow ringlets in the Encke gap at left.

Prometheus (86 kilometers, 53 miles across) is captured in the act of creating another dark gore in the F ring's inner edge. Pandora (81 kilometers, 50 miles across) is farther around the ring's outer edge at top.

This view looks toward the unilluminated side of the rings from about 5 degrees above the ringplane.

The image was taken in visible blue light with the Cassini spacecraft narrow-angle camera on Dec. 6, 2007. The view was acquired at a distance of approximately 1.7 million kilometers (1.1 million miles) from Saturn. Image scale is about 10 kilometers (6 miles) per pixel on both moons.

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: January 16, 2008 (PIA 09816)
Image/Caption Information
  Ring Herders
PIA 09816

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