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A technique developed by astronomers from Caltech and the University of Cambridge that involves using a high-speed camera to take numerous images of the same star. The images least affected by atmospheric seeing are then combined together. The technique can result in image quality from ground-based telescopes that are better than even the Hubble Space Telescope. It has been used on the 5-metre (200-inch) telescope at Palomar to image globular cluster M13 and the Cat's Eye Nebula (NGC 6543).

M13 Globular Cluster (NASA, ESA, and The Hubble Heritage Team (STScI/AURA))

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