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Galileo Galilei, Telescope


Galileo Galilei (1564-1642)
Telescope, Florence, ca. 1610
Florence, Istituto e Museo di Storia della Scienza, inv. 2428

This is one of two original Galileo telescopes that have come down to us. This one is dedicated to Grand Duke Cosimo II de' Medici. It has a magnifying power of 20x.