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A John Cuthbert 5-inch brass Gregorian reflecting Telescope on Stand, English, circa 1830, image 1
A John Cuthbert 5-inch brass Gregorian reflecting Telescope on Stand, English, circa 1830, image 2
A John Cuthbert 5-inch brass Gregorian reflecting Telescope on Stand, English, circa 1830, image 3
A John Cuthbert 5-inch brass Gregorian reflecting Telescope on Stand, English, circa 1830, image 4
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Lot 66

A John Cuthbert 5-inch brass Gregorian reflecting Telescope on Stand,
English, circa 1830,

15 September 2021, 14:00 BST
London, Knightsbridge

Sold for £4,845 inc. premium

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A John Cuthbert 5-inch brass Gregorian reflecting Telescope on Stand, English, circa 1830,

signed John Cuthbert London, the tube with star finder mounted in parallel, focusing to the secondary mirror by long shank and screw, supported by two brackets above mount with altitude and azimuth adjustment, short column and folding tripod base,
tube 18in (46cm) long

Footnotes

John Cuthbert (1783-1854) was a respected optician who made a number of reflecting telescopes. In 1826 he began making a small number of reflecting microscopes in response to the demand to improve the resolution of the microscope image which suffered from chromatic aberration. Lister's publication in 1830 of the new design of refracting objective made the reflecting microscope redundant.

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