What is "uranometria"

Uranometria \U`ra*nom`e*tri"a\, n. [NL.] A uranometry.

Uranometria is the short title of a star atlas produced by Johann Bayer. It was published in Augsburg in 1603 by Christoph Mang (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" (oυρανός) the Greek word for sky / heavens. A literal translation of "Uranometria" is "Measuring the Sky" (to be compared with "Geometry"-"Geometria" in Greek, literally translated to "Measuring the Earth").

It was the first atlas to cover the entire celestial sphere.