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Uranometria is the short title of a star atlas produced by Johann Bayer. It was published in Augsburg, Germany, in 1603 by Christophorus Mangus under the full title Uranometria : omnium asterismorum continens schemata, nova methodo delineata, aereis laminis expressa. This translates to "Uranometria, containing charts of all the constellations, drawn by a new method and engraved on copper plates". The word "Uranometria" derives from Urania, Muse of the heavens and "uranos" the Greek word for sky / heavens. A literal translation of "Uranometria" is "Measuring the Sky". It was the first atlas to cover the entire celestial sphere. The pages of Uranometria were originally engraved on copper plates by Alexander Mair. It contained 51 star charts. The first 48 pages represent the 48 Ptolemaic constellations. The 49th page introduces 12 new constellations in the deep southern sky which were unknown to Ptolemy. The final two charts are planispheres labeled "Synopsis coeli superioris borea" and "Synopsis coeli inferioris austrina," or, "Overview of the northern hemisphere" and "Overview of the southern hemisphere."
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