Reflecting Telescope
date: label: date made
content: after 1860
name: label: maker
content: Secretan
notes: label: Description
content: This equatorially mounted telescope, made in Paris around 1860, has a 4-inch aperture silvered-glass primary mirror of the sort proposed by the physicist J. B. L. Foucault. A small printed label on the square wooden tube carries the message “Les Télescopes à mirroir de verre qui se vendent dans la maison SECRETAN portent tous la signature ci-dessous” along with Foucault’s signature. A one-page lithographed “Instruction pour les Télescopes de verre argenté” carries the stamp of Lerebours et Secretan.
label: Description
content: Marc François Louis Secretan was a scientific instrument maker in Paris who worked in partnership with, and then succeeded, Noel-Lean Lerebours.
label: Description
content: "Telescope en verre argente," L'Annee Scientifique et Industrielle 2 (1857): 25-29.
label: Description
content: "Le telescope de M. Foucault," L'Annee Scientifique et Industrielle 7 (1862): 28-31.
label: Location
content: Currently not on view
place: label: place made
content: France: Île-de-France, Paris
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Science & Mathematics
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.330623
label: accession number
content: 1979.0889
label: catalog number
content: 330623
objectType: label: Object Name
content: telescope, reflecting
physicalDescription: label: Measurements
content: overall: 27 3/4 in x 15 7/8 in x 19 1/2 in; 70.485 cm x 40.3225 cm x 49.53 cm
label: Measurements
content: overall: 19 7/8 in x 15 3/4 in x 25 1/4 in; 50.4825 cm x 40.005 cm x 64.135 cm