Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Inspired by last Saturday's APOD , experimentor Patrick Vantuyne offers this stereo rendering of Apollo 12 astronaut Pete Conrad visiting the Surveyor 3 spacecraft in November of 1969. He found a pair that depicted the captivating scene from only slightly different viewpoints, approximating the separation between human eyes. The color filters guide each eye to see only the picture with the correct corresponding viewpoint and the brain interprets the result as normal stereo vision .
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