Condition: nuovo. Matthieu Husson, José Chabás ?, Richard Kremer (eds). Pages: 550 p.Illustrations:38 b/w, 44 col., 27 tables b/w. Language(s):English, Latin. Publication Year:2026. Brepols. ISBN: 978-2-503-61077-1. Hardback - Summary From the late thirteenth century, when Alfonsine astronomy began to take shape under Alfonso X's patronage in Castille, to the first decades of the sixteenth century, when Alfonsine astronomy had become a common computational tool throughout Europe, astronomers compiled works on tables, instruments, procedures, and theory?now preserved in more than 900 manuscripts from the fourteenth and fifteenth centuries. These sources reveal that Alfonsine astronomers focused on elaborating procedures rather than theoretical speculations or celestial observations. Their procedures?expressed through texts, tables, diagrams, and instruments?were designed to compute astronomical positions. This volume explores computational practices across four sections: (1) procedural texts related to table sets and instruments; (2) tables and table sets, their geometrical and theoretical grounding, purposes, and numerical derivation; (3) questions of numbers, accuracy, rounding, and interpolation; and (4) ephemerides and horoscopes as boundary genres between mathematical astronomy and wider audiences. TABLE OF CONTENTS Introduction Matthieu Husson, José Chabás, and Richard Kremer Part 1: Procedural Texts A Note on Arabes Maxime Eleonora Andriani, Nicholas Jacobson and Samuel Gessner Conrad Heingarter's Treatise on Planetary Latitude Eleonora Andriani, Camille Bui and Nicholas Jacobson The Planicelium of John Vimond Samuel Gessner and Marie-Madeleine Saby Exempla in figura in Alfonsine Canon Commentaries Nicholas Jacobson Part 2: Reconfiguring Tables Mathematical Treatment of Alfonsine Trepidation Petr Hadrava Emergence of Auxiliary Astronomical Tables in Europe Glen Van Brummelen Computing Solar and Lunar Velocities and Radii José Chabás and Bernard R. Goldstein Trigonometric Tables of Jean Fusoris Jean-Claude Penin Regiomontanus on the Equation of Time Eleonora Andriani and Stefan Zieme Part 3: Operating with Numbers Cyclical Radices in the Tabule resolute Alena Hadravová and Petr Hadrava Computational Practices in Alfonsine Astronomy José Chabás Proportional Parts and Interpolation Practices Matthieu Husson Part 4: On the Border of Mathematical Astronomy Medieval Ephemerides Richard L. Kremer Astronomical Computation to Astrological Interpretation Alexandre Tur.