Galilean telescope (spyglass) with achromatic object glass

Made:
1770-1780 in Paris
Galilean telescope (spyglass) with achromatic object glass

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Galilean telescope (spyglass) with achromatic object glass
Science Museum Group
© The Board of Trustees of the Science Museum

Galilean telescope (spyglass) with achromatic object glass, shagreen tube and silver fittings, by ... ldes Porte(r?), Paris, France, c. 1775 (B793). Fitted with multi-power eyepiece and shutter. Dust-cap for object glass missing.

Details

Category:
Optics
Collection:
Sir Henry Wellcome's Museum Collection
Object Number:
1983-159
Materials:
silver (alloy), vellum, fish skin and glass
Measurements:
overall: x 110 mm x , 45 mm, .13kg
type:
telescope - galilean, telescope - terrestrial and telescope - refracting
credit:
Wellcome Trust