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The Historic Discussion of Ptolemy's Star Catalog


From the time of its writing in the 2nd century CE, Claudius Ptolemy’s Almagest stood at the forefront of mathematical astronomy for nearly 1,500 years. This work included a catalog of 1,025 stars, listing their coordinates (in ecliptic longitude and latitude) and brightnesses.

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Hundreds of years after the first try, we can finally read a Ptolemy text