Between Sunshine and Saturnshine (Natural Colors; credits: Lunar Explorer Italia)

Caption NASA:"The huge Odysseus Crater is clearly illuminated by the Sun on the Western Limb (Sx) of Tethys, but Saturn - shining from the right - makes the smaller craters on the Eastern part of the moon also visible.
The ancient Odysseus Crater is 450 Km, or about 280 miles, across and covers a sizable chunk of the moon. North on Tethys is up and rotated 31° to the left.
This view looks toward the Saturn-facing side of the moon.

The image was taken in visible light with the Cassini Spacecraft narrow-angle camera on Jan. 22, 2009. The view was acquired at a distance of approx. 793.000 Km (such as about 493.000 miles) from Tethys and at a Sun-Tethys-Spacecraft, or Phase, Angle of 112°.
Image scale is roughly 5 Km (a little more than 3 miles) per pixel".