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Giuseppe Campani, Objective lens


Giuseppe Campani (1635-1715)
Objective lens, Rome, 1665
Florence, Istituto e Museo di Storia della Scienza, inv. 2587

This objective lens, which is signed and dated around the edge, is dedicated to Ferdinando II de' Medici. It was built for a 10-tube telescope that measured 11 metres in length when fully extended.