Brass Gregorian telescope of 3 1/2 inch aperture

Made:
1757-1761 in London
maker:
Benjamin Martin

Brass Gregorian telescope of 3 1/2 inch aperture by B. Martin, London on altazimuth stand with claw foot stand, 2 eyepieces and a wooden case. The instrument was used by John Winthrop to observe the 1761 transit of Venus. Given to Harvard College by Thomas Hancock of Boston Mass., it is thought to be the only instrument to survive the fire of 1764.

Details

Category:
Astronomy
Materials:
brass, complete and speculum metal
Identifier:
1911-283
type:
telescope - reflecting
taxonomy:
  • furnishing and equipment
  • tools & equipment
  • optical instrument
  • telescope
  • furnishing and equipment
  • tools & equipment
  • optical instrument
  • telescope
  • telescope - reflecting
credit:
Donated by Mr Thomas H. Court (Court Collection)