mirror and parts for 4-foot Gregorian reflecting telescope
Date: 1750-1769
Inventory Number: DWN0001c
Classification: Mirror
Maker: Claude-Siméon Passemant (1702-1769)
Cultural Region:
Place of Origin:
Dimensions:
large tube: 51.4 x 4.8 x 4.8 cm (20 1/4 x 1 7/8 x 1 7/8 in.)
barrel diameter: 18.1 cm (7 1/8 in.)
cap: 3.8 x 19.1 x 19.1 cm (1 1/2 x 7 1/2 x 7 1/2 in.)
Material:
Description:
Very large brass reflecting telescope with an aperture of about 7 inches and a focal length of 3.5 to 4 feet. Tripod stand with large brass mounting for telescope. Box with mirror and lens cap. Sighting telescope.
SignedPASSEMANT OPTICIEN MECANICIEN DU ROY A PARIS
Curatorial RemarksDWN0001a, barrel, 23B6#44
DWN0001b, parts, 23B6#45
DWN0001c, tripod, 23B4#7
DWN0001b, parts, 23B6#45
DWN0001c, tripod, 23B4#7
