Sfera armillare

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Sfera armillare (Armillary sphere) by Ignazio Danti, 1575
Basilica of Santa Maria Novella
Piazza di Santa Maria Novella
Florence, December 2022

“For much of his time in Florence, Danti resided at the convent of Santa Maria Novella, and designed the quadrant and the armillary sphere that appear on the end blind arches of the lower facade of the church in 1572 and 1574, on the right and left respectively. He also designed a large-scale gnomon for the church which allowed a thin beam of light to enter the church at noon each day through a hole just beneath the facade's rose window, although it probably was not completed by the time Danti left Florence.” (Ignazio Danti, Wikipedia)