Small hand Gregorian reflecting telescope

Made:: 1750

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Small hand Gregorian reflecting telescope, unsigned, with twist focussing of secondary mirror (1750), length 6 7/8ins.

Details

Category:: Optics

Object Number:: 1928-917

Materials:: copper (alloy), speculum (alloy of copper and tin), leather and glass

Measurements:: overall: x 175 mm x , 38 mm, .255kg

type:: telescope - gregorian and telescope - reflecting

credit:: Court, Thomas Henry

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Small hand Gregorian reflecting telescope

Details

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