Ptolemy (Claudius of Ptolemaeus) active 150 AD, Alexandrian Greek astronomer and geographer, using quadrant to observe the moon

- Image ID: D968WT
World History Archive / Alamy Stock Photo
Image ID: D968WT
Ptolemy (Claudius of Ptolemaeus) active 150 AD, Alexandrian Greek astronomer and geographer, using quadrant to observe the moon and stars. Urania, Muse of Astronomy, instructs him. Ptolemy is shown wearing a crown as he was sometimes confused with the Ptolemaic kings of Egypt. From 'Margarita Philosophica' by Gregor Reisch (Basle, 1508). Hand-coloured woodcu.