Arthur and the minimoys

The main source of light in this image is the bluish white light shining from the moon at the centre of the image.This casts a rim light on the character ,highlighting his outline.There is also a non motivated fill light in the scene as there are no deep shadows on the characters face, which is supposed to be when a character is lit by back lights.This light also casts highlights on the telescope the character is looking through, giving a sense of direction to the scene.