CICLOPS: Cassini Imaging Central Laboratory for OPerationS

Janus: God of Beginnings
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This close-up view of Saturn's moon Janus (179 kilometers, 111 miles across) shows what appear to be two large craters near the boundary between day and night. The left side of the moon is lit feebly by reflected light from Saturn.

The image was taken in visible light with the narrow angle camera on February 18, 2005, from a distance of approximately 1.1 million kilometers (684,000 miles) from Janus and at a Sun-Janus-spacecraft, or phase, angle of 108 degrees. Resolution in the original image was 7 kilometers (4 miles) per pixel. The image has been contrast-enhanced and magnified by a factor of three to aid visibility.

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: March 25, 2005 (PIA 06613)
Image/Caption Information
  Janus: God of Beginnings
PIA 06613

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