Just because nobody made me sign an NDA for this: there are satellite companies using this for finding other satellites in eclipse. It's a pretty brilliant str

Just because nobody made me sign an NDA for this: there are satellite companies using this for finding other satellites in eclipse. It's a pretty brilliant strategy if you want to dock with something and there's no usable visible light. You can make markings that appear clearly in LWIR by making dark parts shiny (see mostly empty space reflected) and light parts matte (see the thermal emissions of the spacecraft)