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But you have to do this very fast. The characteristic time in the atmosphere is about 1000th or a 2000th of a second on Mauna Kea.
We so need to understand every 2000th of a second what aberrations have been introduced by the atmosphere. We then have to send signals to this deformable
mirror that has thousands of actuators on its back and is about the size of say a dinner plate. Change the shape of that mirror, and then
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