Hesperi Et Phosphori Nova Phaenomena Sive Observationes Circa Planetam Veneris Unde Colligitur

by Francesco Bianchini

$12,500 · Offered by Sophia Rare Books

First edition

Rome: Giovanni Maria Salvioni, 1728. First edition of the first book devoted to the planet Venus — the work in which Francesco Bianchini reported the dark markings he had seen on the planet’s disc through the long aerial telescopes of the Roman maker Giuseppe Campani, deduced from their motion a rotation of 24 days and 8 hours, and drew the first map of the markings on Venus, its continents and oceans named for

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