Early non-achromatic telescope

Made:: France

maker:: John Marshall

Early non-achromatic telescope, 3-draw, dated 1739, French, length closed with caps 12 3/ 8" diam about 1 3/4", object glass 1" diam, focal length 28"

Details

Category:: Optics

Object Number:: 1911-260

type:: telescope - refracting

credit:: Court, Thomas Henry

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Early non-achromatic telescope

Details

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