CICLOPS: Cassini Imaging Central Laboratory for OPerationS

Craters on a Crescent
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A couple of craters share a crescent of lit terrain on Saturn's moon Rhea.

Lit terrain seen here is on the trailing hemisphere of Rhea (1528 kilometers, 949 miles across). This view is centered on 48 degrees north latitude, 234 degrees west longitude. The north pole lies on the terminator about one-quarter of the way inward from the top of the image.

The image was taken in visible violet light with the Cassini spacecraft narrow-angle camera on June 3, 2009. The view was obtained at a distance of approximately 1.4 million kilometers (870,000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 121 degrees. Image scale is 8 kilometers (5 miles) per pixel.

The Cassini Equinox Mission is a joint United States and European endeavor. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter was designed, developed and assembled at JPL. 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 Equinox Mission visit, and

Credit: NASA/JPL/Space Science Institute
Released: July 16, 2009 (PIA 11537)
Image/Caption Information
  Craters on a Crescent
PIA 11537

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