• Image of Astronomicum Caesareum by Peter Apian
  • Image of Astronomicum Caesareum by Peter Apian
  • Image of Astronomicum Caesareum by Peter Apian

Astronomicum Caesareum

FOLIO QB41 .A64 1540

Peter Apian, also known as Petrus Apianus, was a German printer and mathematician who later became a royal astronomer. His work is based on the Ptolemaic theory that the Earth is stationary at the center of the universe and all other planets revolve around it in circular orbits. Astronomicum Caesareum was published just before Copernicus proposed a new theory in 1543 of the sun being at the center of the universe. The book contains hand-colored volvelles, moving paper wheels that function as astrolabes to determine the placement of the planets. Swarthmore’s copy was given by Elizabeth Wilcox Schickele, whose son Peter graduated from Swarthmore in 1957. She gave the book, “In memory of Margaret Ionides Cochran, fine astronomer and friend. With warm thanks to Hewitt Cochran.”

Available through the Internet Archive