Heliostat
Heliostat
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- Description
- A heliostat throws sunlight where it might be used for photography or scientific observations. This example (half of a two mirror instrument) has a silvered-glass octagonal mirror, clockwork mechanism, and tripod base with leveling screws. The “J. A. Brashear, Allegheny, Pa.” inscription refers to John A. Brashear who began making telescopes in 1880, in a shop behind his house in Pittsburgh, and who established a new shop in Allegheny, then a suburb of Pittsburgh, in the fall of 1886.
- Ref: John A. Brashear, Catalogue (Allegheny, 1906), p. 35.
- Location
- Currently not on view
- Object Name
- heliostat
- date made
- around 1900
- maker
- Brashear, John A.
- place made
- United States: Pennsylvania, Pittsburgh
- Measurements
- overall: 20 in; 50.8 cm
- overall: 18 1/2 in x 12 3/8 in x 12 1/2 in; 46.99 cm x 31.4325 cm x 31.75 cm
- ID Number
- PH.315729
- catalog number
- 315729
- accession number
- 217544
- Credit Line
- U.S. Military Academy
- subject
- Science & Scientific Instruments
- See more items in
- Medicine and Science: Physical Sciences
- Data Source
- National Museum of American History
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