Another problem, which might seem surprising for a mission to Pluto, was dealing with the brilliant glare of the distant sun. On the way out to Pluto we had the sun to our back, while after close approach, we turned around to look at the night sides of Charon (and later Pluto), which had New Horizons’ cameras looking almost right back into the sun. Sunlight scattered into the camera strongly washed out the darkened hemisphere. The trick was to use a technique to capture how the scattered sunlight varied over a large collection of images, providing a way to build a perfect model of it for any image. With the sun canceled out we could see the night side of Charon softly lit up by “Plutoshine.