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This list combines large or expensive reflecting telescopes from any era, as what constitutes famous reflector has changed over time. In 1900 a 1-meter reflector would be among the largest in the world, but by 2000, would be relatively common for professional observatories.
This list of the largest optical reflecting telescopes with objective diameters of 3.0 metres (120 in) or greater is sorted by aperture, which is a measure of the light-gathering power and resolution of a reflecting telescope.
Reflector: England: 1800 Father Noel's Gregorian reflector [2] 60 cm (23.5") Reflector – Gregorian: World's largest 1761; 1796 Newtonian conversion: Paris, France: 1761-1841 [5] James Short Gregorian reflector: 50 cm (19.5") Reflector – Gregorian: World's largest 1750: Scotland: 1750 Schröter 27 foot Newtonian [3] 47 cm (18.5") Reflector ...
The Hale Telescope is a 200-inch (5.1 m), f / 3.3 reflecting telescope at the Palomar Observatory in San Diego County, California, US, named after astronomer George Ellery Hale. With funding from the Rockefeller Foundation in 1928, he orchestrated the planning, design, and construction of the observatory, but with the project ending up taking ...
1.83 m: 72" Reflector – metal mirror: William Parsons: Birr Castle, Ireland: 1845 Herschel's 40-foot telescope [1] 1.26 m: 49.5" Reflector – metal mirror: William Herschel: Observatory House, England: 1789–1815 John Michell's Gregorian reflector [2] 75 cm: 29.5" Reflector – Gregorian: John Michell: Yorkshire, Great Britain: 1780–1789 ...
Cassegrain reflector: St Andrews, Fife, Scotland: University of St Andrews: 1962: Largest operational optical telescope in the UK Cambridge 36-Inch telescope [4] 36 in (91.4 cm) Reflector: Cambridge, Cambridgeshire, England: University of Cambridge: 1955: Largest optical telescope still in use in England 36-inch Yapp telescope [5] 36 in (91.4 ...