Collection:
Louwman Collection of Historic Telescopes
Accession #:
LC 60
Sources:
Project investigation;
Cocquyt,Tiemen. "400 Years of Telescopes" booklet, Zeeuws Museum, 2008. Item 10.
Louwman, P.J.K., and Zuidervaart, H.J., "A Certain Instrument to See Far: Four Centuries of Styling the Telescope Illustrated by a Selection of Treasures from the Louwman Collection of Historic Telescopes". Wassenaar, 2009. p.79-80. #65.
Louwman, P.J.K., and Zuidervaart, H.J., "A Certain Instrument for Seeing Far: Four Centuries of Styling the Telescope Illustrated by a Selection of Treasures from the Louwman Collection of Historic Telescopes". Wassenaar, 2013. p.85. #60.
Public Notes:
"Main tube covered with red-brown coloured leather with gold tooling. Four drawtubes. The reversible eyepiece (used for two different magnifications) is covered with marbled paper. End pieces made of walnut. On the lens Ø 4 cm (diaphragm Ø 2.8 cm) is engraved the signature: ‘Giuseppe Campani in Roma’. On the fittings of the eyepiece the following text is written: Questo cannello si allunga è si scorta / secondo le viste(meaning: ‘This tube is elongated or shortened,regarding [the sharpness of] the eye’). On the other reversible part of the eyepiece (used for two magnifications, respectively 8 times and 15 times in diameter) can be read: Quando questa parte stà dentro al / cannello si uede logetto piu chiavo(meaning: ‘if this side is in the tube, the object is seen more clearly’) and in reverse on the other side: Quando questa parte stà dentro al / cannello si uedé l’oggetto più grande (meaning: ‘as this side is in the tube, the object is seen larger’). Last quarter of the seventeenth century" (Louwman and Zuidervaart, 2013).
Dioptrice is made possible by the generous
support of the National Science Foundation, the National
Endowment for the Humanities, the Program in the History and
Philosophy of Science at the University of Notre Dame, and the Adler Planetarium & Astronomy Museum.
