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Amateur adaptive optics

Discovered by Sir William Herschel in March , gas giant Uranus is the penultimate planet of the Solar System and currently well placed for observation in the constellation of Pisces. Despite being four times the diameter of Earth, its immense distance from the Sun 19 Astronomical Units, or 2, million kilometres means that most visual observers consider discerning its tiny 3. However, ambitious owners of large instruments equipped with CCD cameras may care to emulate observers in France and Australia who have recently succeeded in imaging enormous storms raging on the planet at infrared and visual wavelengths. Keck Observatory in Hawaii on 5th and 6th August
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Telescope design promises to revolutionize amateur astronomy

Amateur adaptive optics
Amateur adaptive optics
Amateur adaptive optics
Amateur adaptive optics
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Telescope design promises to revolutionize amateur astronomy

The twinkling of stars is an endearing and romantic characteristic of the night sky. But to professional astronomers wanting the clearest view of faint objects, this celestial shimmer, or seeing, sets a limit on resolution. How can we beat the seeing without leaving terra firma? Amateur astronomers found a way using video techniques. By selecting and compositing only the crispest frames, imagers can produce stunning pictures, better than any view through an eyepiece. This technique works best with bright objects that can be recorded with split-second exposures.
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Amateur astronomers image extreme storms on Uranus

The twinkling of stars is an endearing and romantic characteristic of the night sky. But to professional astronomers wanting the clearest view of faint objects, this celestial shimmer, or seeing, sets a limit on resolution. How can we beat the seeing without leaving terra firma? Amateur astronomers found a way using video techniques. By selecting and compositing only the crispest frames, imagers can produce stunning pictures, better than any view through an eyepiece.
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Greg Marshall is an amateur astro-photographer and the owner of Wa-chur-ed Observatory, a small business that offers both astro-photo art and tools for astronomy. He has an MS degree in Computer Science and 35 years of experience in electronics engineering, specializing in image processing. Throughout the years I have been active in astro-photography, my goal has been to improve the technical quality and to a somewhat lesser extent, the artistry of my images.
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