On the Clarity of Visibility Tests
نویسنده
چکیده
The Almagest star catalog (ASC) has for centuries invited speculation about who actually compiled it. Of its many curious features, the fact that the catalog contains no stars which are visible in Alexandria but not visible in Rhodes suggested to Delambre that perhaps the catalog was actually compiled by Hipparchus, who is known to have lived in Rhodes (at about 36° north latitude), and not by Ptolemy, the author of the
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