![]() Napoleon III Telescope, Warner & Swasey equatorial mount | |
Location(s) | Nieuwland Hall, University of Notre Dame, du Lac, Notre Dame, IN |
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Coordinates | 41°42'06"N, 86°14'11'W41°42′06″N 86°14′11″W / 41.70167°N 86.23639°W |
Organization | Secretan of Paris, Léon Foucault |
Altitude | 225 m |
Wavelength | Visible |
Built | 1867 |
Diameter | 15.24 cm (6-in) |
Focal length | f/15 (7-ft, 6-in) |
Mounting | Equatorial (Warner & Swasey) |
Website | https://physics.nd.edu/ |
The Napoleon III Telescope is an historic 6-inch refracting telescope owned by the University of Notre Dame. The telescope was given to the university in 1867 by French Emperor Napoleon III[1] and is housed in an observatory on the top of the Nieuwland Hall of Science.[2][3] The objective lens of the telescope was designed by the French physicst Léon Foucault[1] who is best known for a pendulum experiment that demonstrated earth's rotation.[4]