PIA08859: Stars and Stripes... and Spokes

Stars and Stripes… and Spokes


From on high, the Cassini spacecraft spots a group of faint spokes against the striped landscape of the B ring, the dark region in the middle of the rings here. The spokes appear as irregular blotches, bright against the unlit side of the rings.

Outside the rings, at about the two o'clock position in the image, is the moon Janus (181 kilometers, or 113 miles across). The two points of light below center, on both sides of the F ring, are not the shepherd moons Prometheus and Pandora, but rather, are stars in the background. Other faint stars are also visible in the image.

This view looks toward the unlit side of the rings from about 46 degrees above the ringplane.

The image was taken in visible light with the Cassini spacecraft wide-angle camera on Dec. 20, 2006 at a distance of approximately 1.9 million kilometers (1.2 million miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 144 degrees. Image scale is 109 kilometers (68 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/home/index.cfm . The Cassini imaging team homepage is at http://ciclops.org .

Cataloging Keywords:

Name Value Additional Values
Target Saturn Rings B Ring, F Ring, Janus, Pandora, Prometheus, Saturn, Sun
System Saturn
Target Type Ring Planet, Satellite, 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 2007-01-22
Date in Caption 2006-12-20
Image Credit NASA/JPL/Space Science Institute
Source photojournal.jpl.nasa.gov/catalog/PIA08859
Identifier PIA08859