The "Cassini" Division (close-up)

Original caption:"The outer reaches of Saturn's Cassini Division merges with the inner A-Ring (at the right) in a Region that is rich in structure.
The smooth Region leading up to the A-Ring grows brighter from the left to the right (known as a "ramp" to Ring).
This Region contains a faint "double-wave" structure that is a density feature caused by the influence of the co-orbital moons Janus and Epimetheus. Scientists are interested in observing the evolution of this density wave as the moons swap places in their orbits every few years, presumably resulting in a change in the perturbations that cause this feature.
This image was taken in visible light with the Cassini narrow-angle camera on Sept. 5, 2005, at a distance of approx. 441.000 Km (about 274.000 miles) from Saturn. The image scale is 2 Km (a little more than 1 mile) per pixel".