In this episode of the serial I’m going to consider medieval directions. Or to be more precise, I begin to consider medieval directions.
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I considered the Hellenistic method of primary directions in two previous posts Primary Directions: the story of calculations (vol.1 and vol.2). Most Hellenistic astrologers directed this way. But there is a very important exception. This exception is Ptolemy.
Ptolemy was an eminent scholar of his time, the level of his knowledges and abilities was much higher than the level of a common astrologer of that time. Ptolemaic method of directions is much more advanced with respect to mathematics and astronomy, than the Hellenistic method I considered before, but his method wasn’t spread among Hellenistic astrologers.
Let’s consider the Ptolemaic method of primary directions as it is described in Tetrabiblos III,10.
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