Search our collection

View:

Filter search

Part of Zenith sector telescope, British, 1800-1822

Part of Zenith sector telescope, British, 1800-1822

1800-1822

Zenith sector telescope by Edward Troughton, London, 1800-1822. Used in America and later in Denmark

Zenith sector telescope, British, 1800-1822, with components

1800-1822

Photographic Zenith Tube (PTZ) and associated components used at the Royal Observatory Greenwich.

Photographic Zenith tube

1955

Airy's Reflex Zenith Tube, 1851, made by Troughton and Simms

Airy's Reflex Zenith Tube

1851

Floating Zenith Telescope designed by Bryson Cookson, made by Cambridge Scientific Instrument Company with objectice lens by T. Cooke & Sons Ltd in 1900. Used at University of Cambridge, Observatories 1900-11 then the Royal Observatory, Greenwich 1911-51.

Floating Zenith Telescope designed by Bryson Cookson

1900

Photograph of 3" Zenith telescope, in glazed frame 17 1/4" x 21 1/4".

Photograph of 3" Zenith telescope

1921

Annulus ring from stand for Cookson Floating Zenith Telescope

Annulus ring from stand for Cookson Floating Zenith Telescope

1900

Three support legs from stand for Cookson Floating Zenith Telescope

Three support legs from stand for Cookson Floating Zenith Telescope

1900

Wooden box containing 4 metal objects with lenses, 1 bottle of 'Brillantine', and numerous screws for Cookson Floating Zenith Telescope.

Wooden box containing 4 metal objects with lenses

1900

Tube and optics for Cookson Floating Zenith Telescope

Tube and optics for Cookson Floating Zenith Telescope

1900

Main part of Zenith sector telescope by Edward Troughton, London, England, 1800-1822

Main part of Zenith sector telescope, British, 1800-1822

1800-1822

Photographic Zenith tube and cover used at the Royal Observatory Greenwich.

Photographic Zenith Tube (PTZ) and Cover

1955

Photograph of a Zenith telescope (6 3/4" x 9 1/2").

Photograph of a Zenith telescope

1876