Description
Reflecting telescope after Gregory. England, around 1790, signed "Watson Makers London", brass, internal mirror made of mirror metal, external focusing by means of a screw spindle, one eyepiece, mounted on a folding tripod, front protective cap missing. Maximum secondary mirror diameter: approx. 80 mm. Horizontal telescope height: approx. 37 cm. Maximum length: approx. 42 cm. A reflecting telescope after Gregory. England c. 1790, signed "Watson Makers London", brass, folding tripod stand. Large mirror diameter c. 80 mm, height (telescope horizontally) c. 37 cm, length max. c. 42 cm.
734
Reflecting telescope after Gregory. England, around 1790, signed "Watson Makers London", brass, internal mirror made of mirror metal, external focusing by means of a screw spindle, one eyepiece, mounted on a folding tripod, front protective cap missing. Maximum secondary mirror diameter: approx. 80 mm. Horizontal telescope height: approx. 37 cm. Maximum length: approx. 42 cm. A reflecting telescope after Gregory. England c. 1790, signed "Watson Makers London", brass, folding tripod stand. Large mirror diameter c. 80 mm, height (telescope horizontally) c. 37 cm, length max. c. 42 cm.