Abraham Zacuto (Hebrew: אברהם זכות, Portuguese: Abraão ben Samuel Zacuto, also Abraham ben Samuel Zacut and Abraham Zacut) (Salamanca, August 12 1452 – Damascus, probably 1515) was a Portuguese astronomer, astrologer, mathematician, rabbi and historian who served as Royal Astronomer in the 15th century to King John II of Portugal. The crater Zagut on the Moon is named after him.Zacuto was born in Salamanca, Spain in 1452. He may have studied and taught astronomy at the University of Salamanca. He later was for a time teacher of astronomy at the universities of Zaragoza and then Cartagena. He was versed in Jewish Law, and was rabbi of his community. Wikipedia
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