This is the first of two volumes containing a collection of famous Greek and Roman astromony texts printed by Aldus Manutius the Elder, a dedicated scholar of the Italian Renaissance who established a printing company in Venice. The works include the Astronomicon by Firmicus Maternus, the Astronomicon by Manilius Marcus, the Phaenomena by Aratus, Commentaria in Aratum by Theon and the Sphaera by Proctus Diadochus.