enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. List of large optical telescopes - Wikipedia

   en.wikipedia.org/wiki/List_of_large_optical...

   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.

3. List of largest optical telescopes historically - Wikipedia

   en.wikipedia.org/wiki/List_of_largest_optical...

   glass mirror reflector: First large Ritchey-Chrétien: Flagstaff, Arizona, USA (Washington, D.C. until 1955) 1934 Plaskett telescope [7] 1.83 m: 72" glass mirror reflector: Designed as world's largest but beaten by the 100-inch Hooker telescope: Dominion Astrophysical Observatory, Canada, USA: 1918 Hooker Telescope: 2.54 m: 100" glass mirror ...

4. List of largest optical reflecting telescopes - Wikipedia

   en.wikipedia.org/wiki/List_of_largest_optical...

   Extremely Large Telescope, Chile – 39.3 m (1,550 in). Construction began in 2018, first light planned in 2028. [23] Thirty Meter Telescope, Hawaii, USA – 30 m (1,200 in). Construction began in 2014 but halted in 2015; as of 2022 it has not resumed. [24] Giant Magellan Telescope, Chile – seven 8.4 m mirrors on a single mount. This provides ...

5. Litttle-known devices restore vision to people who can't be ...

   www.aol.com/litttle-known-devices-restore-vision...

   The devices, called bioptic telescopic glasses, can help patients resume reading, recognizing faces across a room, watching TV, playing cards, in some cases even driving, Palmer said.

6. List of the largest optical telescopes in North America

   en.wikipedia.org/wiki/List_of_the_largest...

   Hale Telescope Palomar Obs. 200 inch 508 cm 1949 USA: Hooker Telescope Mount Wilson Obs. 100 inch 254 cm 1917 USA: McDonald Obs. 82 inch 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]

7. List of largest optical telescopes in the 19th century

   en.wikipedia.org/wiki/List_of_largest_optical...

   The main material used early on for reflecting telescope mirrors was speculum metal, which reflected only about two-thirds of the incident light, and which tarnished, requiring maintenance. Two-element refracting telescopes were extensively used in 19th century observatories despite their smaller apertures than metal, and later glass, mirror ...