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This detailed mosaic of the underside of the Cassini Division was obtained by Voyager 1 with a resolution of about 10 kilometers. The classical Cassini Division appears here to the right of center as five bright rings with substantial blacks gap on either side. The inner edge of the A Ring, to the left of center, is the brightest part of this image. The fine-scale wave structure in this region has been interpreted as being the result of gravitational density waves.
Image Note: Voyages to Saturn NASA SP-451 NASA Scientific and Technical Information Branch 1982 caption (page 179) PICNO 1229S1-001