Speculum mirror for Newtonian reflecting telescope

Made:
1812 in Slough
maker:
William Herschel

Speculum mirror of 8-inch diameter in a brass cell with tinplate cover for the 10-foot Herschel telescope made for the Radcliffe Observatory in 1812.

Details

Category:
Astronomy
Object Number:
1935-5 Pt3
Materials:
brass, complete, iron and speculum
type:
metal mirrors
credit:
Trustees of Dr. John Radcliffe