Refracting telescope of 4½-inch aperture and 5 ft focal length in wooden case with 2 eyepieces and adaptor tube, by Smith Beck & Beck, London, 1863. A Royal Society instrument used by William Radcliff Birt for lunar observations as part of a mapping project of the Moon organised by a committee of the British Association for the Advancement of Science.
Case for 5-foot refracting astronomical telescope made by Smith Beck & Beck in 1863
Refracting telescope of 4½-inch aperture and 5 ft focal length with 2 eyepieces and adaptor tube, by Smith Beck & Beck, London, 1863. A Royal Society instrument used by William Radcliff Birt for lunar observations as part of a mapping project of the Moon organised by a committee of the British Association for the Advancement of Science.
Refracting telescope of 4½-inch aperture and 5 ft focal length, by Smith Beck & Beck, London, 1863. A Royal Society instrument used by William Radcliff Birt for lunar observations as part of a mapping project of the Moon organised by a committee of the British Association for the Advancement of Science.
Component for 5-foot refracting astronomical telescope
Lens for 5-foot refracting astronomical telescope
Lens for 5-foot refracting astronomical telescope
Lens for 5-foot refracting astronomical telescope
Adaptor tube for refracting telescope
