Ioannes Philoponus 
De usu astrolabii eiusque constructione / Über die Anwendung des Astrolabs und seine Anfertigung [EPUB ebook] 

This treatise on the astrolabe by the Alexandrian scholar John Philoponos includes the earliest preserved description of the planispherical device that was later widely disseminated during the Middle Ages. Stückelberger’s edition is intended for philologists as well as historians and astronomers. The newly edited Greek text is accompanied by a German translation, explanations, and illustrations.

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