Shadowed Mimas (natural colors; credits: Lunexit)

Caption NASA:"The shadow of Saturn's Rings sits upon the Northern Hemisphere of Mimas like a dark cap. In this Cassini Spacecraft view, which looks toward high Northern Latitudes on Mimas, the moon is just grazing the shadow of the Rings. The two distinct shadow regions seen here are the penumbra and the much darker umbra. An observer within the penumbral region on Mimas would have their view of the Sun partly blocked by the Rings.
For a viewer within the umbral region, the Rings would completely cover the Sun. However, since the Rings are not opaque, the Sun would still be dimly visible.
The image was brightened to reveal faint details within the eclipsed region, illuminated dimly by sunlight filtering through the Rings. Another view, PIA10467, was acquired a few minutes prior to this image, and shows a nearly identical Mimas (about 396 Km, or approx. 246 miles across) before the Rings' shadow obscured the surface.

The image was taken in visible light with the Cassini Spacecraft narrow-angle camera on Aug. 4, 2008. The view was acquired at a distance of approx. 143.000 Km (89.000 miles) from Mimas and from about 67° above the moon's Equator. The Phase Angle in the image is 106°.
Image scale is 856 meters (2808 feet) per pixel".