The Full Speculum

 

 

What exactly is a Speculum? It is simply a table of positions to aid in the inspection of celestial material. The word Speculum means mirror in Latin and the Speculum, as astrologers use it, means a mirror of planetary positions in various coordinates, listed as tables for convenience on a page. Thus, the Speculum lists planetary right ascensions and declinations as well as other coordinates which may be of interest to the astrologer who wishes to widen his or her technical proficiency in the astronomy of astrology and all that this entails.