Bruce Murray Space Image Library

Triton's crescent in color (high-pass filtered)

Triton's crescent in color (high-pass filtered)
Triton's crescent in color (high-pass filtered) High-pass filtering of a digital image emphasizes small-scale details over large-scale variations in color (such as those caused by the way that solar illumination changes from Triton's bright limb to its dark terminator). NASA / JPL / Ted Stryk