A Byzantine astrological school of the 14th century!

In the 14th century Byzantium was experiencing a premature renaissance. Astrology, which had almost disappeared in the 10th century, was making a dynamic comeback! Already some important astrological figures such as Psellus, Metochite and Gregoras had produced remarkable works. Then, the torch passed to another prominent Byzantine astrologer, John Abramius. Abramius created the most prestigious astrological school of that period. Some of the leading Byzantine astrologers of the 14th and 15th centuries graduated from his school. Even the famous cardinal/astrologer Isidore of Kiev was actually a spiritual child of that school!