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An Reflection Telescope Signed Navarre In Paris C.1750
Reflection telescope mounted on brass base, signed “Navarre A Paris”. Both mirrors are in good condition, The telescope has a brass with leather objective tube, (l18 cm, Ø 5 cm), with main mirror ( Ø 4,1 cm), second mirror ( Ø 1,1 cm) dust cap. Two compound oculars (l 6 cm, Ø 2 cm) are available with a dust cap. Supported by a bracket above a universal ball joint on a turned brass base with the oppertunity to remove the base and screw the telescope on a wooden stick. Navarre was Ordinary Engineer in instruments of physics and mathematics privileged of Monseigneur the Duke of Burgundy (Grand eldest son of Louis XIV). Pupil of Dom Noel (signature on a small telescope ). He worked with him on the construction of a large telescope financed by Louis XV. Navarre specialized in the manufacture of Gregorian telescopes, he presented several at the Academy in 1769 and 1778.