000-190-002-254-C
© National Museums Scotland |
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Telescope (detail)
This is a detail of a refracting telescope made between 1761 and 1766, probably by Peter Dollond (1731-1820), a scientific instrument maker based in London.
The single draw is marked 'P. DOLLOND/ Strand/ LONDON'.
In 1758, Dollond's father, John, a Spitalfields weaver, patented his achromatic doublet lens. In 1765, a further improvement was made by Dollond himself using a double-concave flint glass cemented to two double convex lenses of crown glass. However, the patent was disputed by other London optical instrument makers, although not very successfully.
Record details
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| Online ID: |
000-190-002-254-C |
| Image Rights Holder: |
National Museums Scotland |
| Project: |
0098: National Museums Scotland
Project description | View all records in project |
| Ref: |
National Museums Scotland T.1967.137 |
| Date: |
1761 - 1766
Between 1761 and 1766
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| Material: |
Mahogany tube, brass bound ends, brass draw. Inscription: P DOLLOND / Strand / LONDON
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| Dimensions: |
37.06" L; 1.38" aperture
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| What: |
Telescope, single draw
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| Subject: |
3. ASTRONOMY, Refracting telescopes (Departmental Classification)
22. PHYSICS, Light (Departmental Classification)
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| Who: |
P. Dollond, Strand, London (Maker)
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| Where: |
England, London
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| Event: |
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| Description: |
Single draw telescope made between 1761 and 1766 and signed by P. Dollond of London
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| References: |
- For Peter Dollond, see Clifton, Gloria, Directory of British Scientific Instrument Makers 1550-1851. London: 1995, p 87
- For the invention of the achromatic telescope, see King, Henry C., The History of the Telescope. New York: 1955, chapter 8, pp 144-75
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