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Adaptive thin shell mirror.
Adaptive thin shell mirror.
A laser beam directed toward the centre of the Milky Way. This laser beam can then be used as a guide star for the AO.
A laser beam directed toward the centre of the Milky Way. This laser beam can then be used as a guide star for the AO.
GRAAL is a ground layer adaptive optics instrument assisted by lasers.
GRAAL is a ground layer adaptive optics instrument assisted by lasers.
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Astronomical observatories are generally situated on mountaintops, as the air at ground level is usually more convective. A light wind bringing stable
Astronomical observatories are generally situated on mountaintops, as the air at ground level is usually more convective. A light wind bringing stable air from high above the clouds and ocean generally provides the best seeing conditions (telescope shown: NOT).
Astronomers can make use of an artificial star by shining a powerful laser to correct for the blurring caused by the atmosphere.
Astronomers can make use of an artificial star by shining a powerful laser to correct for the blurring caused by the atmosphere.
This amateur lucky imaging stack using the best of 1800 frames of Jupiter captured using a relatively small telescope approaches the theoretical maxim
This amateur lucky imaging stack using the best of 1800 frames of Jupiter captured using a relatively small telescope approaches the theoretical maximum resolution for the telescope, rather than being limited by seeing.