A Treatise on the Construction of Astrolabes by Jacob ben Abi Abraham Isaac al

Corsuno’s treatise on the astrolabe (Barcelona, 1378) is extant in only one Hebrew manuscript preserved at the Bayerische Staatsbibliothek in Munich. This text, which is a set of instructions for constructing an astrolabe, is, according to Corsuno’s words, a translation of the Arabic treatise that he devoted to the same topic in Seville in 1376, which is not extant. The text presents original traits in relation to contemporary astrolabe sources and certainly in relation to Hebrew sources on the astrolabe. The article analyses Corsuno’s contribution to the field of astrolabe literature in Hebrew and presents the Hebrew edition and translation of his astrolabe text (the Hebrew edition available in the Hebrew appendices, in the online version of JHA)