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DTSTART;TZID=Europe/Rome:20181206T114500
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DTSTAMP:20260507T133151
CREATED:20181106T172218Z
LAST-MODIFIED:20181106T172218Z
UID:4814-1544096700-1544100300@www.oa-roma.inaf.it
SUMMARY:Paolo Dal Pozzo Toscanelli\, Cosimo de’ Medici and the Sky of the Magi:  a new reading of the Florentine Celestial Hemispheres in the Sagrestia Vecchia at San Lorenzo and in the Pazzi Chapel at Santa Croce.
DESCRIPTION:After 30 years since the historical pubblication of the analysis\nconducted by Forti\, Lapi Ballerini\, Monsignori Fossi and Ranfagni (1987)\, I\noffer a careful re-examination of the two famous florentine starry vaults of\nthe early Renaissance\, taking into account the recent restoration of the\nhemisphere of the Pazzi Chapel and the almost coeval maps drawn by Paolo\nDal Pozzo Toscanelli for his studies of comets in 1456 (Halley) and 1457.\nThe authorship by the Tuscan cosmographer is confirmed in the Sagrestia\nVecchia on the basis of a comparison between a sample of stars from the\ndome\, Toscanelli’s maps and Ptolemy’s Catalogue. The Pazzi Chapel instead\,\nreveals on close inspection to be a clumsy\, derivative later work.\nWhile the double date proposed in 1987\, the enigmatic 4/5 july 1442\, still\nremains astronomically the most probable\, I will show that the exactness of\nthe planetary positions have been overestimated\, unfairly provoking a lack of\nattention for other candidate dates\, more astrologically meaningful if not\ndepicted with satisfying correctness. Relying indeed on the astrological\ntechniques and interests of the time\, I propose to assess the 1442 and the\n1439 most probable candidate horoscopes following the very appropriate line\nof reasoning introduced by Dieter Blume (2000)\, i.e. considering the\ncongruence of the sky charts with principles and rules of astral divination as\nwell as with the political situation in Florence and with the cultural needs of\nthe clients.\nFinally\, I single out as most probable the second date (even exhibiting a\nmarginal evidence for it on the basis of Lorenzo de’ Medici’s calendarial\nconcerns)\, and I offer a new hypothetical explanation for this preference\,\nlinking medicean interest in the magian narrative and the Star of Bethlehem\,\nastrological speculation and political propaganda.
URL:https://www.oa-roma.inaf.it/event/paolo-dal-pozzo-toscanelli-cosimo-de-medici-and-the-sky-of-the-magi-a-new-reading-of-the-florentine-celestial-hemispheres-in-the-sagrestia-vecchia-at-san-lorenzo-and-in-the-pazzi-chapel-at/
LOCATION:Aula Gratton
CATEGORIES:Seminari
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