Refracting Telescope.

Refracting telescope of 3 3/4 inch aperture and 5-foot focal length on English type equatorial mounting. Built in 1797 for Captain Huddart, Highbury, London with optics by Peter & John Dollond and mounting by Troughton. In 1816 it was acquired by Sir James South who used it with Sir John Herschel to observe double stars.

Details

Category:
Astronomy
Object Number:
1918-170
Materials:
iron, brass, silver and glass
type:
telescope - refracting and equatorial instrument
credit:
Mr William Woodard

Parts

Circular Section for Refracting Telescope.

Circular Section for Refracting Telescope.

Circular section for a refracting telescope of 3 3/4 inch aperture and 5-foot focal length on English type equatorial mounting.

Additional telescope pieces alongside main cylindrical section. Comprising mainly of various metal components including spirit level, adjustment handle, measuring microscope and metal tin for the 4 ½” lens.

The telescope was built in 1797 for Captain Huddart, Highbury, London with optics by Peter & John Dollond and mounting by Troughton. In 1816 it was acquired by Sir James South who used it with Sir John Herschel to observe double stars.

Measurements:
overall: 1280 mm x 805 mm x 1560 mm,
Materials:
mounting, iron , fittings, brass , scales silver and lens, glass
Object Number:
1918-170 Pt1
type:
instrument component , telescope - refracting and equatorial instrument
Lens for Refracting Telescope.

Lens for Refracting Telescope.

Objective lens of 4 1/2 inch aperture by Dollond for a refracting telescope of 5-foot focal length. Built in 1797 for Captain Huddart, Highbury, London with optics by Peter & John Dollond and mounting by Troughton. In 1816 it was acquired by Sir James South who used it with Sir John Herschel to observe double stars.

Materials:
glass and brass
Object Number:
1918-170 Pt2
type:
instrument component and objective lens
Image ©
The Board of Trustees of the Science Museum
Main Body for Refracting Telescope.

Main Body for Refracting Telescope.

Main body for a refracting telescope of 3 3/4 inch aperture and 5-foot focal length on English type equatorial mounting. Built in 1797 for Captain Huddart, Highbury, London with optics by Peter & John Dollond and mounting by Troughton. In 1816 it was acquired by Sir James South who used it with Sir John Herschel to observe double stars.

Measurements:
overall: 3210 mm x 815 mm x 915 mm,
Object Number:
1918-170 Pt 3
type:
telescope - refracting and equatorial instrument