Galileo's objective lens

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Galileo's objective lens is a specific objective lens held in the Museo Galileo, Florence, Italy. It was used by Galileo Galilei in the Galilean telescope with which he discovered the four largest moons of Jupiter in 1610. The lens has a diameter of 38mm and a gilt brass housing. The frame is made of ebony and ivory and has dimensions of 410mm x 300mm. ^[1]

Frame

In 1677, the Medici commissioned Vittorio Crosten to build the ebony and ivory frame in which the lens has since been preserved. The frame is carved with floral motifs, images of scientific instruments and Latin inscriptions commemorating Galileo's achievements and his connection to the Medici family. A cartouche is inscribed "COELUM LINCEAE GALILEI MENTI APERTUM VITREA PRIMA HAC MOLE NONDUM VISA OSTENDIT SYDERA MEDICEA IURE AB INVENTORE DICTA SAPIENS NEMPE DOMINATUR ET ASTRIS" (The sky opened by the lynx-like thought of Galileo with this first glass lens showed stars never seen before, rightly called Medicean by their discoverer. The wise man indeed dominates the stars as well). Below the cartouche appears "VC," the initials of the engraver.^[2]

References

^ "Galileo's objective lens". museogalileo.it. Retrieved 18 November 2016.
^ "Frame for Galileo's lens". museogalileo.it. Retrieved 18 November 2016.

Bibliography

van Helden, Albert, ed. (1999). Catalogue of early telescopes (in Italian). Firenze: Giunti. p. 32, board n. 3. ISBN 88-09-21680-6.

Mara Miniati, ed. (1991). Museo di storia della scienza: catalogo (in Italian). Firenze: Giunti. p. 60, boards n. 31. ISBN 88-09-20036-5.

External links

Museo Galileo

v t e Galileo Galilei
Scientific career	Observational astronomy Galileo affair Galileo's escapement Galilean invariance Galilean moons Galilean transformation Leaning Tower of Pisa experiment Phases of Venus Celatone Thermoscope
Works	De motu antiquiora (1589–1592) Sidereus Nuncius (1610) Letters on Sunspots (1613) Letter to Benedetto Castelli (1613) "Letter to the Grand Duchess Christina" (1615) "Discourse on the Tides" (1616) Discourse on Comets (1619) The Assayer (1623) Dialogue Concerning the Two Chief World Systems (1632) Two New Sciences (1638)
Family	Vincenzo Galilei (father) Michelagnolo Galilei (brother) Vincenzo Gamba (son) Maria Celeste (daughter) Marina Gamba (mistress)
Related	"And yet it moves" Villa Il Gioiello Galileo's paradox Sector Museo Galileo Galileo's telescopes Galileo's objective lens Tribune of Galileo Galileo thermometer Galileo project spacecraft Galileo Galilei Airport Galileo National Telescope Astronomers Monument
In popular culture	Life of Galileo (1943 play) Lamp At Midnight (1947 play) Galileo (1968 film) Galileo (1975 film) Starry Messenger (1996 book) Galileo's Daughter: A Historical Memoir of Science, Faith, and Love (1999 book) Galileo Galilei (2002 opera) Galileo's Dream (2009 novel)

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