Galilean refracting telescope on folding tripod

Made:
1785-1795 in London
maker:
Jesse Ramsden
Galilean refracting telescope on folding tripod, brass

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Galilean refracting telescope on folding tripod, brass
Science Museum Group
© The Board of Trustees of the Science Museum

Galilean refracting telescope on folding tripod, brass, by Jesse Ramsden, London, England, c. 1790, 2-powers eyepiece. Achromatic object glass, aperture (1 3/8-inch), focal length (6-inch). Main lens cap missing

Details

Category:
Optics
Object Number:
1948-143
Materials:
copper (alloy), glass and iron
Measurements:
overall: 185 mm x 185 mm x 120 mm, , .265kg
type:
telescope - galilean, telescope - terrestrial and telescope - refracting
credit:
Solar Physics Observatory, Cambridge