CICLOPS: Cassini Imaging Central Laboratory for OPerationS
Study in Contrasts

Study in Contrasts
PIA 12678

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  Crisp details on Dione contrast with the haziness of Titan in this Cassini image of a pair Saturn's moons.

Smaller Dione is at the bottom of the image, and that moon's wispy terrain is visible. See PIA12608 to learn more. Titan dominates the rest of the image, and that moon's north polar hood is visible here. See PIA08137 to learn more.

Lit terrain seen here is on the trailing hemisphere of Dione (1123 kilometers, 698 miles across) and in the area between the trailing hemisphere and anti-Saturn side of Titan (5150 kilometers, 3200 miles across).

The image was taken in visible blue light with the Cassini spacecraft narrow-angle camera on April 20, 2010. The view was obtained at a distance of approximately 2.3 million kilometers (1.4 million miles) from Dione and at a Sun-Dione-spacecraft, or phase, angle of 101 degrees. The view was obtained at a distance of approximately 1.3 million kilometers (808,000 miles) from Titan and at a Sun-Titan-spacecraft, or phase, angle of 101 degrees. Image scale is 14 kilometers (9 miles) per pixel on Dione and 8 kilometers (5 miles) per pixel on Titan.

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, 2010 (PIA 12678)
Image/Caption Information

Alliance Member Comments
enceladus5 (Jul 17, 2010 at 4:53 PM):
Lovely shot of Titan and Dione.Cassini shows us the dazzling variety of worlds that inhabit the Saturnian system.