historical astrological texts a few astrologers are now translating these, for the use of astrologers and scholars. Previous translations (such as Ptolemy's Tetrabiblios) have been translated by scholars who had no knowledge of astrology. Here are a couple of sights which explain more
Arhat Project Hindsight even if you are not an astrologer you may find these interesting given that the texts where written when astrology/astronomy were the same science