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Giuseppe Campani, Telescope with four tubes


Giuseppe Campani (1635-1715)
Telescope with four tubes, Rome, 1666
Florence, Istituto e Museo di Storia della Scienza, inv. 2556

This telescope, signed and dated on the edge of its objective lens, has its erector unit (used to restore the image to the upright position) housed in a small cardboard cylinder applied to the final tube.