Öner Döşer is one of Turkey's most prominent astrologers - a consultant, instructor, researcher, and author based in Istanbul. He is the founder of AstroArt School of Astrology, School of Astrology Publications, and Astrology Television. Since 2005, when he founded the School of Astrology in Turkey, he has trained more than 4,000 students, many of whom have become teachers and writers in the astrological community. He received a Medieval Astrology qualification (A.M.A. - Adept in Medieval Astrology) from Robert Zoller. He holds ISAR (International Society for Astrological Research) and OPA (Organization for Professional Astrology) certificates, and is a member of APAI (Association of Professional Astrologers International). AstroArt School of Astrology has been on the APAI and ISAR approved schools list since 2016. He also teaches online courses at Kepler College in Seattle. Öner has authored 39 books, 14 of which have been translated into English, Chinese, and Serbian. His articles have been published in multiple languages in international astrology journals. He organises International Astrology Days in Istanbul annually since 2012, bringing together leading names from the field globally.