Mirror, coelostat
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1993.0048.001
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- OBJECT TYPE
- N/A
- DATE
- 1884
- ARTIFACT NUMBER
- 1993.0048.001
- MANUFACTURER
- Brashear, John A. Co. Ltd.
- MODEL
- Unknown
- LOCATION
- Pittsburgh, Pennsylvania, United States of America
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- GLASS, IN WOOD & METAL CASE
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 24.7 cm
- Width
- 22.7 cm
- Height
- 9.0 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Astronomy
- Category
- Observation equipment
- Sub-Category
- N/A
Manufacturer
- AKA
- Brashear
- Country
- United States of America
- State/Province
- Pennsylvania
- City
- Pittsburgh
Context
- Country
- Canada
- State/Province
- Ontario
- Period
- C. 1905-1950'S
- Canada
-
CAME ORIGINALLY FROM THE DOMINION OBSERVATORY IN OTTAWA - Function
-
USED TO REFLECT THE LIGHT OF A CELESTIAL BODY IN A CONSTANT DIRECTION FOR STUDY WITH A FIXED INSTRUMENT (SUCH AS A TELESCOPE) BY MEANS OF A MOVING MIRROR. - Technical
-
Unknown - Area Notes
-
Unknown
Details
- Markings
- ON BACK OF MIRROR, 'J.A. Brashear/ Pittsburg/ PA/ 1884'/ ON BOTTOM OF CASE: 'Tin Box/ 8 3/4 diameter/ 1 5/8" high no bottom/ Cover to fit tight inset 1/4 inc./ Make overlap of cover/ as narrow as possible'
- Missing
- N/A
- Finish
- CLEAR GLASS, BIT OF SILVER COLOUR AROUND OUTEREDGE OF BOTTOM/ BASE OF CASE APPARENTLY UNFINISHED WOOD, METAL CASE BLACKENED & RUSTY ON OUTSIDE, SHINY SILVER COLOUR ON INSIDE OF LID
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Brashear, John A. Co. Ltd., Mirror, coelostat, 1884, Artifact no. 1993.0048, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1993.0048.001/
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