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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.
In 1999, the Sky-Watcher brand was established to sell Synta Taiwan's optics, with head offices in Richmond, British Columbia, Canada. They began producing Dobsonian telescopes in 2000, followed by Maksutov–Cassegrains in 2001, and Apochromat ED-APO refracting telescopes in 2004.
The 3.6m Devasthal (Hindi: देवस्थल) Optical Telescope is a clear-aperture Ritchey–Chrétien telescope built by Aryabhatta Research Institute of Observational Sciences (ARIES) and is located at the Devasthal Observatory site near Nainital, Kumaon, India. [1] ARIES operates another 1.3m telescope at the same location.
Brazos Bend State Park, near Houston, Texas, US Giant Meterwave Radio Telescope (GMRT) 1995 Pune, Maharashtra, India Gifford Observatory: 1912 Wellington, New Zealand Girawali Observatory: 2006 Pune, Maharashtra, India Glen D. Riley Observatory: 1973 Naperville, Illinois, US Godlee Observatory: 1902 Manchester, England, UK Goodsell Observatory ...
The ETX started out as a 90 mm (3-1/2") Maksutov Cassegrain telescope (first produced in 1996) and took advantage of high volume mass production and simplified optical and parts construction to open a new market for a cheap alternative to the very expensive Questar 3-1/2 Maksutov Cassegrain [1] [2] The ETX "line" has been expanded to 105 mm, and 125 mm Maksutov Cassegrains and achromatic ...
The LBT mirrors individually are the joint second-largest optical telescope in continental North America, next to the Hobby–Eberly Telescope in West Texas. It has the largest monolithic, or non-segmented, mirror in an optical telescope. Strehl ratios of 60–90% in the infrared H band and 95% in the infrared M band have been achieved by the ...
The then-unnamed Otto Struve Telescope was dedicated on May 5, 1939, [2] and at that time was the second largest telescope in the world. McDonald Observatory was operated under contract by The University of Chicago until the 1960s, when control was transferred to The University of Texas at Austin under the direction of Harlan J. Smith. [3]
"Sky's/Heaven's Eye"), is a radio telescope located in the Dawodang depression (大窝凼洼地), a natural basin in Pingtang County, Guizhou, southwestern China. [1] FAST has a 500 m (1,640 ft) diameter dish constructed in a natural depression in the landscape. It is the world's largest single-dish telescope. [2]