• Thumbnail for Extremely Large Telescope
    The Extremely Large Telescope (ELT) is an astronomical observatory under construction. When completed, it will be the world's largest optical and near-infrared...
    50 KB (5,386 words) - 07:10, 11 June 2025
  • Thumbnail for Extremely large telescope
    An extremely large telescope (ELT) is an astronomical observatory featuring an optical telescope with an aperture for its primary mirror from 20 metres...
    15 KB (896 words) - 06:25, 23 June 2025
  • Thumbnail for Overwhelmingly Large Telescope
    Overwhelmingly Large Telescope (OWL) was a conceptual design by the European Southern Observatory (ESO) organisation for an extremely large telescope, which was...
    6 KB (565 words) - 20:57, 23 June 2025
  • Thumbnail for Thirty Meter Telescope
    The Thirty Meter Telescope (TMT) is a planned extremely large telescope (ELT) proposed to be built on Mauna Kea, on the island of Hawai'i. The TMT would...
    78 KB (7,656 words) - 09:26, 25 June 2025
  • Thumbnail for List of largest optical reflecting telescopes
    as above. These telescopes are under construction and will meet the list inclusion criteria once completed: Extremely Large Telescope, Chile – 39.3 m...
    32 KB (1,309 words) - 10:03, 25 June 2025
  • Thumbnail for Giant Magellan Telescope
    The Giant Magellan Telescope (GMT) is a ground-based, extremely large telescope currently under construction at Las Campanas Observatory in Chile's Atacama...
    38 KB (3,774 words) - 06:26, 23 June 2025
  • Thumbnail for Very Large Telescope
    The Very Large Telescope (VLT) is an astronomical facility operated since 1998 by the European Southern Observatory, located on Cerro Paranal in the Atacama...
    57 KB (5,671 words) - 15:52, 19 May 2025
  • The California Extremely Large Telescope (CELT) was a proposal for an extremely large telescope design first proposed in the 1990s by a consortium of Californian...
    3 KB (355 words) - 04:00, 28 May 2025
  • Thumbnail for Ultraviolet astronomy
    also carry telescopes for observing the Sun in ultraviolet. The Hubble Space Telescope and FUSE have been the most recent major space telescopes to view...
    9 KB (863 words) - 04:03, 27 February 2025
  • Thumbnail for European Southern Observatory
    is the Extremely Large Telescope. It will use a 39.3-metre-diameter segmented mirror, and become the world's largest optical reflecting telescope when operational...
    61 KB (5,370 words) - 04:28, 8 March 2025
  • Thumbnail for Large Binocular Telescope
    The Large Binocular Telescope (LBT) is an optical telescope for astronomy located on 10,700-foot (3,300 m) Mount Graham, in the Pinaleno Mountains of...
    21 KB (2,125 words) - 11:01, 15 November 2024
  • Thumbnail for Large Zenith Telescope
    The Large Zenith Telescope (LZT) was a 6.0-meter diameter liquid-mirror telescope located in the University of British Columbia's Malcolm Knapp Research...
    5 KB (532 words) - 13:36, 14 October 2024
  • Thumbnail for Liquid-mirror telescope
    130 kelvins) have been proposed as the fluid base for an extremely large-diameter spinning liquid-mirror telescope to be based on the Moon. Low temperature is advantageous...
    21 KB (2,731 words) - 10:08, 23 June 2025
  • Thumbnail for Atacama Desert
    decided to build a fourth site, Cerro Armazones, to be home to the Extremely Large Telescope. Construction work at the ELT site started in June 2014. The Carnegie...
    61 KB (6,266 words) - 04:22, 26 June 2025
  • Thumbnail for Schott AG
    mirror substrates for large optical telescopes such as: European Southern Observatory’s Very Large Telescope and Extremely Large Telescope in Chile, Gran Telescopio...
    20 KB (1,727 words) - 13:17, 25 June 2025
  • Thumbnail for Paranal Observatory
    on Hawaii. The Very Large Telescope (VLT), the largest telescope on Paranal, is composed of four separate 8.2 m (320 in) telescopes. In addition, the four...
    12 KB (1,145 words) - 15:13, 12 April 2025
  • Thumbnail for Vera C. Rubin Observatory
    The Vera C. Rubin Observatory, formerly known as the Large Synoptic Survey Telescope (LSST), is an astronomical observatory in Chile. Its main task is...
    110 KB (10,708 words) - 21:17, 25 June 2025
  • Thumbnail for New Technology Telescope
    to all major modern telescopes, such as the Very Large Telescope at Cerro Paranal and the future European Extremely Large Telescope. The design of the...
    6 KB (755 words) - 20:04, 22 October 2024
  • Thumbnail for Binoculars
    sizes vary widely from opera glasses to large pedestal-mounted military models. Unlike a (monocular) telescope, binoculars give users a three-dimensional...
    98 KB (11,111 words) - 07:13, 9 May 2025
  • Thumbnail for Observational astronomy
    the resolution of a telescope. Without some means of correcting for the blurring effect of the shifting atmosphere, telescopes larger than about 15–20 cm...
    27 KB (3,381 words) - 12:00, 22 April 2025
  • Thumbnail for Segmented mirror
    Segmented mirror (category Optical telescope components)
    of the James Webb Space Telescope Three extremely large telescopes will be the next generation of segmented-mirror telescopes and are planned to be commissioned...
    11 KB (1,246 words) - 22:24, 20 December 2024
  • Thumbnail for Magellan Telescopes
    Telescope (GMT) is an extremely large telescope under construction, as part of the US Extremely Large Telescope Program. Baade telescope: Inamori Magellan...
    6 KB (569 words) - 20:03, 22 October 2024
  • Thumbnail for Astronomy
    Gamma Ray Observatory or by specialized telescopes called atmospheric Cherenkov telescopes. The Cherenkov telescopes do not detect the gamma rays directly...
    103 KB (10,554 words) - 19:03, 25 June 2025
  • learning theory Ending lamination theorem Extremely large telescope, a type of telescope Extremely Large Telescope, an astronomical observatory under construction...
    1 KB (171 words) - 07:49, 15 May 2024
  • Thumbnail for Jodrell Bank Observatory
    Extremely Large Telescope Fabra Observatory Griffith Observatory La Silla Observatory Llano de Chajnantor Observatory Paranal Observatory Very Large Telescope...
    49 KB (5,202 words) - 23:02, 21 June 2025
  • Thumbnail for Archaeoastronomy
    Aveni. A.F. (1986). "Archaeoastronomy: Past, Present and Future". Sky and Telescope. 72: 456–60. Bibcode:1986S&T....72..456A. Aveni, A.F. (1989a). World Archaeoastronomy...
    119 KB (14,709 words) - 15:57, 23 June 2025
  • Thumbnail for La Silla Observatory
    Observatory Atacama Large Millimeter Array Paranal Observatory Very Large Telescope Cerro Armazones Observatory Extremely Large Telescope Cerro Tololo Inter-American...
    33 KB (3,255 words) - 14:04, 22 November 2024
  • Observatory 3.4 m (first light planned in 2020) Extremely Large Telescope (first light planned in 2027) Public Telescope (PST), German project of astrofactum. Launch...
    30 KB (3,161 words) - 11:11, 24 May 2025
  • Thumbnail for Very Large Array
    March 2020 through October 2022. Allen Telescope Array (ATA) Atacama Large Millimeter Array (ALMA) Green Bank Telescope (GBT) Lake San Agustín, which once...
    22 KB (2,274 words) - 14:26, 27 May 2025
  • typically around 100–150 mm across at sea level, and larger at higher altitudes. A small telescope may look through individual cells, whose movements give...
    175 KB (20,281 words) - 15:28, 25 June 2025