PIA12692: Black Blemish


Black Blemish

Caption:

A crescent Saturn is blemished by the black spot of its moon Dione seen orbiting between the planet and the Cassini spacecraft.

Although Dione appears as only a black dot, there is actually a thin crescent of lit terrain on the moon, just as there is on Saturn. However, the lit terrain on Dione is lost in front of the brilliant backdrop of Saturn.

This view looks toward the northern, sunlit side of the rings from just above the ringplane.

The image was taken in visible red light with the Cassini spacecraft wide-angle camera on Oct. 27, 2009. The view was obtained at a distance of approximately 2.3 million kilometers (1.4 million miles) from Saturn and at a sun-Saturn-spacecraft, or phase, angle of 120 degrees. Image scale is 136 kilometers (85 miles) per pixel.

Background Info:

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 mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.

For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov/ . The Cassini imaging team homepage is at http://ciclops.org .

Cataloging Keywords:

Name Value Additional Values
Target Dione Saturn, Sun
System Saturn
Target Type Satellite Planet, Sun
Mission Cassini-Huygens
Instrument Host Cassini Orbiter
Host Type Orbiter
Instrument Imaging Science Subsystem (ISS)
Detector Wide Angle Camera
Extra Keywords Grayscale
Acquisition Date
Release Date 2010-08-05
Date in Caption 2009-10-27
Image Credit NASA/JPL/Space Science Institute
Source photojournal.jpl.nasa.gov/catalog/PIA12692
Identifier PIA12692