Spectroscope

Description
Following his appointment as Secretary of the Smithsonian Institution in 1887, Samuel Pierpont Langley built an astrophysical observatory in Washington, D.C. The centerpiece of this facility was this large spectroscope outfitted with a bolometer for studies of the infra-red solar spectrum. The form was worked out by William Grunow, a German immigrant and instrument maker then living in West Point, N.Y., following Langley's directions and suggestions. Actual production was done by William Grunow Jr., in New York City. The cost was $2,800.
Ref: Annals of the Astrophysical Observatory of the Smithsonian Institution 1 (1900).
D. J. Warner, "Julius & William Grunow," Rittenhouse 3 (1989): 41-48.
Location
Currently not on view
date made
1890s
maker
Grunow, William
Measurements
overall: 21 1/4 in x 11 in x 9 in; 53.975 cm x 27.94 cm x 22.86 cm
overall: 9 3/16 in x 21 in x 9 in; 23.33625 cm x 53.34 cm x 22.86 cm
ID Number
PH.314883
accession number
211531
catalog number
314883.01
Credit Line
Smithsonian Astrophysical Observatory
subject
Astronomy
See more items in
Medicine and Science: Physical Sciences
Science & Mathematics
Optics
Data Source
National Museum of American History, Kenneth E. Behring Center

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