"Mimas' huge crater Herschel faces directly into the direction of orbit (90 degrees longitude), and 2 degrees south latitude. At that position, it has this view of Saturn, with rings extending vertically like a sword. Mimas, lies 1.5 degrees off the plane of the rings, so the rings appear as a thin ellipse rather than a razor-thin line as it does from other moons.
In this view, the surface is only lit from Saturn itself, which is illuminated from below and behind. Herschel's central peak rises in the center. Saturn will always appear in the same place, just going through phases like our moon."