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DIVINI AND CAMPANI

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Octagonal telescope

Inv. 2557 V.54 Octagonal telescope 1674 Eustachio Divini, Rome Wood, cardboard, Florentine paper Length 5650 mm

Description Terrestrial telescope consisting of seven main tubes, a separate tube for the objective and three small tubes constituting the composite eyepiece. Of the seven main tubes, six are made of wood and have octagonal sections; the seventh, the smallest, is made of cardboard, has a circular section and is covered in red marbled paper. The plano-convex objective is contained in a small cardboard tube, which has to be inserted into the largest section, and is signed on the glass and on the diaphragm by the maker, Eustachio Divini. The complex optical configuration allowed the instrument to enlarge objects by about 55 times.