Nastulus

Muḥammad ibn ʿAbd Allāh Nasṭūlus was a 10th century astronomer. He is known for making one of the oldest surviving astrolabes, dated 927/928, as well as of another partially preserved astrolabe that bears his signature, "Made by Nasṭūlus in the year 315" of hijra. Very little is known about Nasṭūlus.