Dodekatemoria in Alfonso d’Este Anonymous horoscope

 

Several years ago I commented some techniques employed by an unknown astrologer in a judgement written for Alfonso d’Este, the illegitimate son of the Duke of Ferrara. This judgement contains many  tables summarizing several traditional techniques: of some I have already talked here.

Someone asked  me about the table concerning dodekatemoria.

Directing according Valens and Ptolemy: ascensional times against semiarc

In this short post I’ d like to compare the main methods of directing in Hellenistic astrology. Many have already explained this subject (( see for example  Martin Gansten, in Balbillus and aphesis in Greek, Roman, and Byzantine Studies, n. 52 (2012) )) but it can be useful to recapitulate the matter.

CLAUDIUS PTOLEMY’ METHOD
Ptolemy does not use the Hellenistic method but a method  which it is differentiated according the position of the point.