Brass refracting telescope of 4 1/2 inch aperture signed by Dollond

Brass refracting telescope of 4 1/2 inch aperture signed by  Dollond Brass refracting telescope of 4 1/2 inch aperture signed by  Dollond Brass refracting telescope of 4 1/2 inch aperture signed by  Dollond

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Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

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License this image for commercial use at Science and Society Picture Library

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Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

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License this image for commercial use at Science and Society Picture Library

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Brass refracting telescope of 4 1/2 inch aperture signed by Dollond, London, c.1860. Altazimuth mount on wooden tripod, complete with original box, 1-inch finder 5 astronomical and 2 terrestrial eyepieces, slow-motion right ascension and declination gearing stabilising rods, brass collar, miscellaneous filters, travelling wire eyepiece micrometer with additional eyepiece and spare wire

Details

Category:
Astronomy
Object Number:
1982-919
Materials:
brass, wood and glass
type:
telescope - refracting and filar micrometer - wire
credit:
Philip, T. (Trevor) and Sons

Parts

wooden case

wooden case

wooden case, mahogany, for brass refracting telescope of 4 1/2-inch aperture by Dollond, London, c.1860, containing five astronomical and one terrestrial eyepieces, miscellaneous filters, travelling wire eyepiece micrometer with additional eyepiece and spare wire

Measurements:
overall: 170 x 1610 x 270 mm
Materials:
mahogany
Object Number:
1982-919 Pt1
type:
instrument case
Brass refracting telescope of 4 1/2 inch aperture signed by Dollond

Brass refracting telescope of 4 1/2 inch aperture signed by Dollond

Brass refracting telescope of 4 1/2 inch aperture signed by Dollond, London, c.1860. Altazimuth mount on wooden tripod, 1-inch finder, one terrestrial eyepiece, slow-motion right ascension and declination, gearing stabilising rods, brass collar.

Measurements:
overall: 2000 mm x 1900 mm x 1120 mm, ,
Materials:
metal , brass (copper, zinc alloy) , glass , mahogany (wood) and steel (metal)
Object Number:
1982-919 Pt2
type:
instrument component and telescope - refracting