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Saturn's A ring appears bright compared to the thin F ring which is shepherded by the moon Prometheus in this view from Cassini.
Prometheus can be seen near the F ring on the middle right of the image. The gravity of potato-shaped Prometheus (86 kilometers, 53 miles across) periodically creates streamer-channels in the F ring, and the moon's handiwork can be seen faintly on the right. To learn more and to watch a movie of this process, see PIA08397.
This view looks toward the northern, sunlit side of the rings from about 5 degrees above the ringplane.
A star is visible in the lower left of the image.
The image was taken in visible red light with the Cassini spacecraft wide-angle camera on Jan. 27, 2010. The view was obtained at a distance of approximately 322,000 kilometers (200,000 miles) from Prometheus. Image scale is 19 kilometers (12 miles) per pixel.
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.