Astrologers at Work brings together fourteen scholars to explore the history of astrological practice, focusing on techniques, doctrines, and methods of interpretation across cultures and centuries. Originating from the Tools of the Art conference, organised by the Astra Project in memory of Helena Avelar, this volume highlights astrologyâs technical and intellectual dimensions, placing it at the heart of pre-modern science and culture. Through detailed studies of charts, doctrines, and practices, it reveals the central role astrology played in shaping ideas about nature, knowledge, and fate. This work is a vital contribution to the history of science, culture, and ideas.
LuÃs Campos Ribeiro (PhD, University of Lisbon, 2021) is a historian of science and art and a researcher at CIUHCT, University of Lisbon, specializing in the history of astrology and astronomy.
Charles Burnett (BA, PhD Cambridge), Professor Emeritus of Arabic/Islamic Influences in Europe at the Warburg Institute, University of London and Fellow of the British Academy. His research has concentrated on the translations of Arabic texts into Latin in the Middle Ages.
Preface List of Figures and Tables Abbreviations Astrological Symbols Notes on Contributors
1 The Origins of Questions in Astrology
âDorian Greenbaum
2 The Ruling Planet (Almuten) in the Latin Tradition
âDavid Juste
3 Sahl ibn Bishr, the Choice Nuggets of Judgement or 50 Precepts, in Arabic and Its Latin and Hebrew Versions
âCharles Burnett
4 al-Ashraf ËUmarâs Tabá¹£ira, Chapter xl.1 An election table as a tool for an astrologer?
âPetra G. Schmidl
5 A Buddhist Astrologer and Monk in the Twelfth Century: Reading a Japanese Horoscope
âJeffrey Kotyk
6 Some Astrological Practices in Light of the Horoscopes of the Emperor Zenoâs Anonymous Astrologer
âLevente László
7 The Astrology of Nativities in Richard de Fournivalâs Nativitas and in the Speculum Astronomiae
âJean-Patrice Boudet and Christopher Lucken
8 John of Lübeckâs Antichrist-Prediction (1474): A Unique Astrological Practice
âStephan Heilen
9 From Medieval to Renaissance Astrology: Marsilio Ficinoâs Astrological Writings and Practices, A Survey
âH. Darrel Rutkin
10 The Changing Meaning of Astrological Elections: Ficino and the Astrologers
âSteven Vanden Broecke
11 Ignorance, Pitfalls and Scribal Errors: On the Proper Assessment of Historical Horoscopes of the Early Modern Period
âGünther Oestmann
12 Astrology by Numbers: Early Modern Quantification of Planetary Influence
âLuÃs Campos Ribeiro
13 The Private Workings of a Very Public Astrologer: William Lilly (1602â1681)
âSusan Ward
Helena Avelar (1964â2021)
Index of Manuscripts Index of Terms, People, and Places
For readers interested in the history of astrology, in its technical and intellectual aspects across cultures and epochs, from Hellenistic, Arabic, and Chinese traditions to Medieval and Early Modern European practices.