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Updated: May 2, 2025
But as his method could be strictly accurate only twice a month the periods of the first and second quadratures his rectifications could be hardly called successful. Still it is to the labors of this eminent astronomer, carried on uninterruptedly for fifty years in his own observatory, that we owe the first map of the Moon. It was published in 1647 under the name of Selenographia.
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