Newtonian reflecting telescope with ten-inch glass mirror, on an equatorial fork mounting, made by Horace Dall in Luton, England, UK, 1933-1937.

Horace Dall (1901–1986) was an engineer and amateur astronomer and microscopist. He made and designed optical instruments in his spare time, and was recognised for his work in solar, lunar and planetary photography. He made this telescope to order in the 1930s; his extensive correspondence with the first owner of the telescope, a Reverend J. Coulter, was also passed to the Science Museum when the telescope was acquired in the 1990s.

Components for Newtonian reflecting telescope with ten-inch glass mirror, on an equatorial fork mounting, made by Horace Dall in Luton, England, UK, 1933-1937. Includes: a tool for adjusting the telescope base to conform with the latitude of the observer, and a nut from the telescope tube.

Horace Dall (1901–1986) was an engineer and amateur astronomer and microscopist. He made and designed optical instruments in his spare time, and was recognised for his work in solar, lunar and planetary photography. He made this telescope to order in the 1930s; his extensive correspondence with the first owner of the telescope, a Reverend J. Coulter, was also passed to the Science Museum when the telescope was acquired in the 1990s.