Inspired and commissioned by the late astrologer Al H Morrison, Dividing The Heavens is a handbook for the "compleat" astrologer. Here is a treatment of the complex trigonometry of erecting a precise horoscope wheel from raw data, rather than relying on the compromise results inherent in the use of chart tables. Featured are methods for the derivation of five house systems: Porphyry, Alcabitius, Campanus, Regiomontanus and Koch. The first four of...