List of largest optical telescopes in the continental United States

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List largest optical telescopes in the continental United States ranks optical telescopes located in the Continental United States by aperture.

Name Image Effective aperture
m
Aper.
in
Mirror type Nationality / Sponsors Site Built
Large Binocular Telescope (LBT) LBT-Gebaeude.jpg 11.9 m (8.4 m×2) 330″×2 Multiple mirror, 2 USA, Italy, Germany Mount Graham International Obs., Arizona, USA 2004
Hobby-Eberly Telescope (HET) (11 m × 9.8 m mirror) HET Dome.jpg 9.2 m 362″ Segmented, 91 USA, Germany McDonald Observatory, Texas, USA 1997
MMT (1 x 6.5 M1) MMT Observatory.jpg 6.5 m 256″ Single USA F. L. Whipple Obs., Arizona, USA 2000
Hale Telescope (200 inch) P200 Dome Open.jpg 5.08 m 200″ Single USA Palomar Observatory, California, USA 1948
MMT (6×1.8 m) original optics 4.7 m
(6×1.8 m) [1]
186″ Segmented, 6 USA F. L. Whipple Obs., Arizona, USA 1979–1998
Discovery Channel Telescope[2] The Dome of Discovery Channel Telecope.JPG 4.3 m 169″ Single USA Lowell Observatory, Happy Jack, Arizona 2012
Nicholas U. Mayall 4m[3] Kittpeakteliscope.JPG 4 m 149.5″ Single USA Kitt Peak National Obs., Arizona, USA 1973
USAF Starfire 3.5 m [4] Big3 5mtele.gif 3.5 m 138″ Single USA Starfire Optical Range, New Mexico, USA 1994
WIYN Telescope 3.5 m 138″ Single USA Kitt Peak National Obs., Arizona, USA 1994
Space Surveillance Telescope Space Surveillance Telescope.jpg 3.5 m 138″ Single USA White Sands Missile Range, New Mexico, USA 2011
Astrophysical Research Consortium (ARC) D70050914 15 ApolloLLR.jpg 3.48 m 137″ Single USA Apache Point Obs., New Mexico, USA 1994
Shane Telescope Shane dome.JPG 3.05 m 120″ Single USA Lick Observatory, California, USA 1959
NASA-LMT[5] retired Liquid Mirror Telescope.jpg 3 m 118″ Liquid USA NASA Orbital Debris Obs., New Mexico, USA 1995–2002
For telescopes below 3 meters see List of large optical telescopes

Three biggest refractors in the Continental United States:

Name/Observatory Location Lens diameter Focal length Built Comments Image
Yerkes Observatory[6] Williams Bay, Wisconsin, USA 102 cm (40″) 19.4 m (62′) 1897 Largest in current operation.[7] Image-Yerkes2small.jpg
James Lick telescope
Lick Observatory
Mount Hamilton, California, USA 91 cm (36″) 17.6 m 1888   Lick Observatory Refractor.jpg
William Thaw Telescope
Allegheny Observatory
Pittsburgh, Pennsylvania, USA 76 cm (30″) 14.1 m 1914 Brashear made, photographic[8] Allegheny Observatory 2007a.jpg

See also[edit]

References[edit]

  1. ^ by Dwayne DayMonday, May 11, 2009 (2009-05-11). "Mirrors in the dark". The Space Review. Retrieved 2012-01-03. 
  2. ^ Lowell Observatory - DCT status
  3. ^ "The Mayall 4-Meter Telescope". Noao.edu. February 27, 1973. Retrieved August 19, 2009. 
  4. ^ John Pike. "Starfire". Globalsecurity.org. Retrieved August 19, 2009. 
  5. ^ "NASA Orbital Debris Observatory". Astro.ubc.ca. Retrieved August 19, 2009. 
  6. ^ http://astro.uchicago.edu/vtour/40inch/
  7. ^ http://www.britannica.com/EBchecked/topic/653042/Yerkes-Observatory
  8. ^ http://www.flamsteed.info/fasother6_files/page0001.htm