Each night, Risinger set the six cameras — high-end monochrome astrophotography imagers equipped with different filters — to point in the exact same spot and continuously feed his laptop with images. He monitored the photographs in real-time and passed the dark hours eating sunflower seeds. Meanwhile, his dad slept.
Back in Seattle, Risinger began piecing the panoramic image together in January. He used a computer software program to scan each frame, recognize the pattern with a database of stars and then match them with the other colors and frames. That got projected onto a sphere.
via yahoo news
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