Grating, spectrograph
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1996.0247.001
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- OBJECT TYPE
- METAL/FLAT SURFACE/SILVER COAT ALUMINIUM COATING/593 LINES PER MM
- DATE
- Unknown
- ARTIFACT NUMBER
- 1996.0247.001
- MANUFACTURER
- Unknown
- MODEL
- Unknown
- LOCATION
- Unknown
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 2
- AKA
- N/A
- Patents
- N/A
- General Description
- SPECULUM METAL GRATING/ BRASS? FRAME & MOUNT
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 21.0 cm
- Width
- 16.7 cm
- Height
- 14.6 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
- Unknown
- Country
- Unknown
- State/Province
- Unknown
- City
- Unknown
Context
- Country
- Canada
- State/Province
- Ontario
- Period
- Unknown
- Canada
-
MADE FOR RALPH DE LURY OF DOMINION OBSERVATORY. - Function
-
DEVICE CONSISTING OF SERIES OF FINE, CLOSELY SPACED PARALLEL LINES ON METAL, USED TO DISPERSE LIGHT ACCORDING TO WAVELENGTH IN SPECTROSCOPY INSTRUMENT SUCH AS DIFFRACTION SPECTROMETER. - Technical
-
USED WITH NRC SOLAR TELESCOPE. - Area Notes
-
Unknown
Details
- Markings
- HAND PRINTED LETTERING ON CARDBOARD READS "JOHN HOPKINS/ GRATING/ 600 l/mm/ USED IN SOLAR SPECTROGRAPH/ 1951-1971"/ HAND WRITTEN LETTERING ON BACK READS "2 flat / 2 plane / P-10"/ "P 10" SCRATCHED IN GLASS AT FRONT AT ONE END
- Missing
- APPEARS COMPLETE
- Finish
- POLISHED GRATING/ BLACK PAINTED METAL
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Unknown Manufacturer, Grating, spectrograph, Unknown Date, Artifact no. 1996.0247, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1996.0247.001/
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