Janus and Atlas

Caption NASA originale:"The irregularly-shaped moon Janus (181 Km across) and the small ring moon Atlas (32 Km across) had just emerged from the darkness of Saturn's shadow when Cassini caught this view of the two moons.
Saturn's bright A-Ring is largely overexposed in this view, but several other ring details are nicely visible. The image shows two bright regions within the B-Ring (at right), ringlets of material within the dark, narrow Encke Gap and kinks in the F-Ring.
North on Saturn is tilted toward upper left. This view is from Cassini's vantage point beneath the ring plane. It is notable that, as Saturn orbits the Sun, its shadow has been steadily creeping farther out along the ring plane and now extends beyond the F-Ring. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Jan. 26, 2005, at a distance of approximately 3,2 MKM from Janus and at a phase angle of 81°. The image scale is 19Km/pixel".