Telescope (Comet Seeker)
date: label: date made
content: ca 1840
notes: label: Description
content: This comet seeker is one of the “two forty-five inch Refractors” mentioned in a Georgetown publication of 1852. The achromatic objective has an aperture of 3.5 inches, and the brass tube is but 34 inches long, giving it a relatively short-focus and wide field of view. It has a brass pillar-and-tripod base, and wooden rods for adjustment in altitude and azimuth. It may have come from the shop of W. & S. Jones, 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
topic: label: Subject
content: Astronomy
setName: label: See more items in
content: Medicine and Science: Physical Sciences
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content: Astronomy
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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.316097
label: catalog number
content: 316097
label: accession number
content: 224215
objectType: label: Object Name
content: telescope
label: Object Name
content: telescope, refracting
physicalDescription: label: Physical Description
content: brass (overall material)
label: Measurements
content: overall: 28 in x 16 1/2 in x 34 3/4 in; 71.12 cm x 41.91 cm x 88.265 cm
label: Measurements
content: scope: 34 3/4 in x 4 in; 88.265 cm x 10.16 cm