CICLOPS: Cassini Imaging Central Laboratory for OPerationS
On the Bright Side

On the Bright Side
PIA 08950

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  Cassini views terrain on the bright, trailing side of Iapetus in natural color. This side of Iapetus starkly contrasts with the much darker leading hemisphere, and some of the dark material seen here in association with craters near the terminator is an extension of the leading hemisphere terrain.

This region was previously imaged by the spacecraft at a much finer resolution -- a spatial scale of less than 1 kilometer (0.6 miles) per pixel -- during a flyby at the close of 2004. This terrain was then on the moon's night side at the time, and Cassini imaged it using weak, reflected light from Saturn (see PIA6168).

The present view looks toward Iapetus (1,471 kilometers, 914 miles across) from about 24 degrees above the moon's equator.

Images taken using red, green and blue spectral filters were combined to create this natural color view. The images were taken with the Cassini spacecraft narrow-angle camera on April 15, 2007 at a distance of approximately 2.3 million kilometers (1.4 million miles) from Iapetus and at a Sun-Iapetus-spacecraft, or phase, angle of 66 degrees. Scale in the original images is 13 kilometers (8 miles) per pixel. The view has been magnified by a factor of three.

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: May 29, 2007 (PIA 08950)
Image/Caption Information

Alliance Member Comments
Red_dragon (May 29, 2007 at 7:12 AM):
If you didn't say it's a color view of Iapetus, it could de taken as an image of Titan taken with IR filters.
Quite interesting image; let's see what Cassini sees in Iapetus during the 10th September flyby. I haven't lost hope of finding there the Clarke's "stargate"