Theoria Eclipsium is from the 1742 Atlas Coelestis. It is a diagram of the solar and lunar eclipses drawn by the astronomer Johanne Dopplemayr. This beautiful work of art was published by the renowned German cartography firm of Homann Heirs. It is in very good condition with the publisher’s center fold and has two small tears in the bottom center margin.
Johann Doppelmayr ( 1677- 1750 ) was a German mathematician, astronomer and cartographer. He was a member of the Royal Society of London and the Berlin and St. Petersburg Academies of Sciences. He was also a professor of mathematics at the Aegidien Gymnasium in Nuremberg. He collaborated with the cartographer Johann Baptist Homann (1664 -1724 ) which resulted in the 1742 Atlas Novus Coelestis in quo Mundus Spectablis. This Atlas has 20 plates that have various astronomical themes and 10 that are constellation maps showing the paths of comets and the positions of the stars two of which are eclipse maps.