Maps were more a form of artistic expression ... to make mapping realistic came in the second century A.D. with Claudius Ptolemy. He was an astronomer and astrologer obsessed with making accurate ...

Claudius Ptolemy was a Greek mathematician ... Much of medieval astronomy and geography were built on his ideas: his world map, published as part of his treatise Geography in the 2nd century ...

Claudius Ptolemy (150 AD) map drawn from Ptolemy's coordinates for a 1482 edition of his Geographia (The Ulm Edition, Leinhard Holle) Lands beyond the bounds of the known world tantalized the ...

an independent historian who led the analysis of the map, currently held at Yale University’s Beinecke Library. Martellus relied on Claudius Ptolemy’s projections and then updated them with ...

“It’s one of the most beautiful maps to have survived from the Renaissance ... One was the 1522 edition of the Geography of Claudius Ptolemy, the other a collection of historical narratives ...