[Astronomia] Preclarum summi in astrorum scientia Principis Alchabitii Opus scrutanda Stellarum Magisteria isagogicum pristino Candori [...] Joannis de Saxonia Comentario. [Al fin:] Impressum Venetiis per Melchiorem Sessam & Petrum de Ravanis socios, Anno Dni. 1521, Die 18. Junii.

Venecia, , 1521. . 21,5x14,5 cm. . Melchor Sessa y Pedro de Ravanis, Tipografia gótica. Marca del impresor grabada en madera en la portada. Figuras astrológicas dentro de texto. 63 folios (el folio 47 numerado por error 48), 1 hoja blanca. Sign. a-h8. Encuadernación de pergamino moderno. Restauraciones en el margen inferior derecho afectando la caja tipográfica. Numerosas anotaciones manuscritas marginales del siglo XVI, muy interesantes, una hoja al final con anotaciones manuscritas del s.XVI, sobre el Calendario y la Astrología. Abu al-Saqr Abd al-Aziz Ibn Uthman Ibn Ali al-Qabisi l-Mawsili al-Hashimi, generally known as Al-Qabisi, (Latinised as Alchabitius or Alcabitius), and sometimes known as Alchabiz, Abdelazys, Abdilaziz astrologer, astronomer and mathematician. Originally from Iraq, Alchabitius later went to Aleppo where he worked for and lived in the palace of Sayf al-Dawla. He died in 967. Al-Qabisi is best known for his treatise on judicial astrology, Introduction to the Art of Judgments of the Stars. This was dedicated to the Emir of Aleppo, Prince Sayf al-Dawla, and survives in at least twenty-five Arabic manuscripts, and over two hundred manuscripts of its Latin translation, with twelve printed editions of the Latin work between 1473 and 1521. The Arabic text has received at least three Latin translations, which attracted several commentaries and were, in turn, translated into other European languages. In the 12th century it was translated by Johannes Hispalensis. In 1512 it was published by Melchiorre Sessa in Venice. The 1473 copy, and others up until 1521, features writing about Al-Qabisi by John of Saxony. Al-Qabisi wrote a modest book on arithmetic, "Risala fi anwâ' al-'adad" (Treatise on the kinds of numbers), in which he discusses Euclid's perfect numbers and how to form them, and Th?bit ibn Qurra's theorem on amicable numbers.