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Largest optical telescope in UK, but never used due to flawed optics James Gregory Telescope [3] 37 in (94.0 cm) 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 ...
Telescopes can be classified by optical design or mechanical design/construction. Telescopes can also be classified by where they are placed, such as space telescopes. One major determining factor is type of light, or particle being observed including devices referred to as "telescopes" that do not form an image or use optics.
By modern standards these are small, as well as being affected by light pollution. The 36-inch telescope was used for studies of stellar radial velocities until 2019, and the historic Northumberland and Thorrowgood telescopes are used as part of the public outreach activities of the Institute.
Amateur astronomers watch the night sky during the Perseid meteor shower.. Amateur astronomy is a hobby where participants enjoy observing or imaging celestial objects in the sky using the unaided eye, binoculars, or telescopes.
Multiple mirror telescopes that are on the same mount and can form a single combined image are ranked by their equivalent aperture. Fixed altitude telescopes (e.g. HET) are also ranked by their equivalent aperture. All telescopes with an effective aperture of at least 3.00 metres (118 in) at visible or near-infrared wavelengths are included.
This list of space telescopes (astronomical space observatories) is grouped by major frequency ranges: gamma ray, x-ray, ultraviolet, visible, infrared, microwave, and radio. Telescopes that work in multiple frequency bands are included in all of the appropriate sections.