Al-Sufi also wrote about the astrolabe , finding numerous additional uses for it : he described over 1000 different uses , in areas as diverse as astronomy , astrology , horoscopes , navigation , surveying , timekeeping , Qibla , Salat prayer , etc. .
Al-Sufi also wrote about the astrolabe , finding numerous additional uses for it : he described over 1000 different uses , in areas as diverse as astronomy , astrology , horoscopes , navigation , surveying , timekeeping , Qibla , Salah prayer , etc. .