List of Largest Optical Reflecting Telescopes - Plans

Plans

Below are selected telescopes that are still in the conceptual/proposed stage or still under construction.

Under construction or planned construction
  • European Extremely Large Telescope 39.3 m
  • Thirty Meter Telescope 30 m
  • Giant Magellan Telescope 7×8.4 m mirrors = 24.5 m aperture (21.4 m equivalent area)
  • Large Synoptic Survey Telescope 8.4 m (2015 first light planned)
  • James Webb Space Telescope 6.5 m (2018 launch planned)
  • Automated Planet Finder 2.4 m (almost complete)
  • Pan-STARRS 4 x 1.8 m (1 complete)
  • Magdalena Ridge Observatory Telescope Array 10 x 1.4 m
  • Thai National Telescope Project 2.4 m
  • Advanced Technology Solar Telescope 4 m (see also list of solar telescopes)
  • International Liquid Mirror Telescope 4 m
  • HDRT 22m equiv.
  • 3.6 m Devasthal Optical Telescope (2013 first light planned)
Proposed or planned
  • ALPACA telescope, 8 m liquid mirror
  • Advanced Technology Large-Aperture Space Telescope (ATLAST), 8-15m space telescope
  • Chinese Future Giant Telescope (CFGT). Proposed optical telescope with a 30 meter diameter primary mirror.
  • Chinese Giant Solar Telescope (CGST) China aim to build a very large infrared and optical solar telescope, with the spatial resolution expected to be equivalent to an 8m-diameter telescope and light-gathering power equivalent to a 5m-diameter full aperture telescope
Formerly proposed or planned
  • Overwhelmingly Large Telescope 60–100 m study concluded
  • Euro 50 50 m study concluded
  • Large Atacama Telescope
  • Hubble Origins Probe study concluded

Read more about this topic:  List Of Largest Optical Reflecting Telescopes

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