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Published online by Cambridge University Press: 30 March 2016
The problem of optical distortion produced by the earth’s atmosphere has been known in astronomy since Isaac Newton. In 1953 H. W. Babcock (1953) proposed in his paper “The Possibility of Compensating Astronomical Seeing” to use a deformable optical element driven by a wavefront sensor to correct the distortions induced by the atmosphere that affect astronomical imaging. It took another 20 years for this principle to be demonstrated successfully for defence related laser applications. And only in the early eighties the first astronomical adaptive optics projects had been triggered.