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© Sierra College Astronomy Department

11

Claudius Ptolemy

Worked in at the Great Library at Alexandria

Invented the latitude and longitude system

Wrote a book on astronomy – 

Often referred to as Almagest = “The Greatest”

Contained improved methods to find distance to the Sun and Moon

May have taken some ideas from Hipparchus

Ancient Astronomy Claudius Ptolemy (127-151 AD)

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