Telescope
date: label: date made
content: ca 1840
name: label: maker
content: W. & S. Jones
notes: label: Description
content: This is one of the “two forty-five inch Refractors” mentioned in a Georgetown publication of 1852. It has a brass pillar-and-tripod base, an equatorial mount, and mahogany handles for adjustments in right ascension and declination. The (missing) achromatic objective had an aperture an 3.5 inches. The brass tube is 42½ inches long. The “W. & S. Jones” inscription refers to a London firm that, from 1791 to 1859, sold a wide range of scientific and mathematical instruments.
label: Description
content: Ref: <i>Annals of the Astronomical Observatory of Georgetown College, D.C.</i> 1 (1852), p. 14.
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom: England, London
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Astronomy
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Georgetown University
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.316098.01
label: accession number
content: 224215
label: catalog number
content: 316098.01
objectType: label: Object Name
content: telescope
label: Object Name
content: telescope, refracting
physicalDescription: label: Measurements
content: overall: 45 1/2 in x 9 in x 3 in; 115.57 cm x 22.86 cm x 7.62 cm
label: Measurements
content: overall: 47 in x 4 1/2 in x 4 in; 119.38 cm x 11.43 cm x 10.16 cm