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Department store 50 mm Tasco Specialty Refractor on modified mount (lower left) and a 114mm Sky-Watcher reflector. Tasco's telescopes have a reputation as entry-level equipment. [2] [3] It is one of several companies advertising their products based on claims of high magnification, far beyond any attainable usable magnification. [2]
This is a list of large optical telescopes. For telescopes larger than 3 meters in aperture see List of largest optical reflecting telescopes . This list combines large or expensive reflecting telescopes from any era, as what constitutes famous reflector has changed over time.
Tasco is a major international distributor of telescopes. The company's line of products mainly target amateur astronomers but has grown to include many products besides telescopes . Tasco's other products include terrestrial spotting scopes , microscopes , binoculars , and telescopic sights and other rifle accessories.
An Astroscan wide-field Newtonian reflector. The Astroscan was a wide-field 4â…›" clear-inch (105mm) diameter reflecting telescope , originally produced by the Edmund Scientific Corporation , that was for sale from 1976 to 2013.
i.e. Otto Struve Telescope: 82 inch 208 cm 1939 USA: David Dunlap Observatory: 74 inch 188 cm 1935 Canada: Plaskett telescope Dominion Astrophysical Obs. 72 inch 182 cm 1918 Canada: 69-inch Perkins Telescope [10] Perkins Observatory: 69 inch 175 cm: 1931–1964 USA: Wyeth 61" reflector [11] Oak Ridge Observatory: 61 inch 155 cm: 1933–2005 [12 ...
A reflecting telescope by James Short; this English telescope maker produced almost 1400 Gregorian reflectors in the mid-1700s. Mobile versions were used to observe the Transit of Venus . List of largest optical telescopes in the 18th century includes various refractors and reflectors that were active some time between about 1699 to 1801.
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