CICLOPS: Cassini Imaging Central Laboratory for OPerationS
Moons Off the Port Bow

Moons Off the Port Bow
PIA 06631

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  Three of Saturn's moons crowd together off the left edge, or ansa, of Saturn's rings.

Moons visible in this image: Rhea (1,528 kilometers, 949 miles across), largest, near center; Mimas (396 kilometers, 246 miles across), smaller, beneath center; and Helene (33 kilometers, 21 miles across), faintly visible above and to the right of Rhea. Helene has had its brightness increased by a factor of 10.

The image was taken with the wide angle camera on March 7, 2005 from a distance of approximately 1.3 million kilometers (799,000 miles) from Saturn and using a combination of spectral filters sensitive to polarized infrared light centered at 1,001 nanometers (1.001 microns). The image scale is 8 kilometers (5 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: April 20, 2005 (PIA 06631)
Image/Caption Information