Refracting Telescope.

Made:: 1797 in London

maker:: J. & E. Troughton and Peter and John Dollond, Peter & John

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

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Parts

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.

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

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.