CICLOPS: Cassini Imaging Central Laboratory for OPerationS
Crescent Dione

A thin crescent of cratered terrain is illuminated on Saturn's fourth largest moon, Dione.

Lit terrain seen here is on the Saturn-facing side of Dione (1123 kilometers, 698 miles across). North is up.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 17, 2010. The view was acquired at a distance of approximately 394,000 kilometers (245,000 miles) from Dione and at a Sun-Dione-spacecraft, or phase, angle of 151 degrees. Image scale is 2 kilometers (1 mile) per pixel.

[Caption updated Jan. 5, 2012.]

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: September 1, 2010 (PIA 12711)
Image/Caption Information
  Crescent Dione
PIA 12711

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Alliance Member Comments
Red_dragon (Sep 6, 2010 at 3:06 AM):
Lovely, with Dione looking like a mythological bow.
jmason (Sep 2, 2010 at 9:29 AM):
letmein: That dot is not a satellite. It is a star.
letmein (Sep 1, 2010 at 8:55 PM):
What's that shiny dot on the right side of this image? A satellite too?