Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight

PART OF:: Refracting telescope with 5.9-inch aperture lens, brass tube and English type equatorial mounting and clockwork drive

Made:: 1829 in London

maker:: George Dollond, Charles Tulley and Troughton and Simms Limited

$Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$ $Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$ $Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$ $Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$ $Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$ $Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$ $Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$ $Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$

$Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$ $Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$ $Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$ $Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$ $Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$ $Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$ $Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$ $Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight$

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Refracting telescope of 5.9-inch aperture by Dollond mounted on English type equatorial mounting with off-set lead counterweight, later modified by Troughton in 1874.

Details

Category:: Astronomy

Object Number:: 1929-949 Pt1

Materials:: mahogany, brass, steel, glass and lead

Measurements:: Tube: 3963 mm, 170 mm,
Overall (with plinth): 4300 mm x 1230 mm x 4460 mm, 274 kg

type:: instrument component and telescope - refracting

credit:: Royal Observatory, Greenwich

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