• Thumbnail for Reflecting telescope
    A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image...
    33 KB (3,948 words) - 15:45, 28 April 2025
  • Thumbnail for List of largest optical reflecting telescopes
    Telescopes with aperture diameter >8 metres This list of the largest optical reflecting telescopes with objective diameters of 3.0 metres (120 in) or greater...
    32 KB (1,309 words) - 12:43, 30 June 2025
  • Thumbnail for Newtonian telescope
    The Newtonian telescope, also called the Newtonian reflector or just a Newtonian, is a type of reflecting telescope invented by the English scientist...
    17 KB (1,943 words) - 23:03, 7 June 2025
  • Thumbnail for Telescope
    Spitzer Space Telescope, observing from about 3 μm (0.003 mm) to 180 μm (0.18 mm) uses a mirror (reflecting optics). Also using reflecting optics, the Hubble...
    42 KB (3,970 words) - 11:39, 24 June 2025
  • Thumbnail for History of the telescope
    and began producing telescopes using it in commercial quantities, starting in 1758. Important developments in reflecting telescopes were John Hadley's...
    75 KB (9,307 words) - 04:49, 24 April 2025
  • Thumbnail for Niccolò Zucchi
    mirror instead of a lens as a telescope objective, which may be the earliest known description of a reflecting telescope. In his book, he also demonstrated...
    11 KB (1,269 words) - 21:52, 30 March 2025
  • Thumbnail for Extremely large telescope
    mirror from 20 metres up to 100 metres across, when discussing reflecting telescopes of optical wavelengths including ultraviolet (UV), visible, and...
    15 KB (896 words) - 06:25, 23 June 2025
  • Thumbnail for Ritchey–Chrétien telescope
    Ritchey-Chrétien telescopes. List of largest optical reflecting telescopes List of telescope types Lurie–Houghton telescope Maksutov telescope Reflecting telescope Schmidt–Cassegrain...
    16 KB (2,153 words) - 18:56, 25 May 2025
  • The Gregorian telescope is a type of reflecting telescope designed by Scottish mathematician and astronomer James Gregory in the 17th century, and first...
    7 KB (705 words) - 04:48, 22 June 2024
  • Thumbnail for Vera C. Rubin Observatory
    Laboratory. The Rubin Observatory houses the Simonyi Survey Telescope, a wide-field reflecting telescope with an 8.4-meter primary mirror that can photograph...
    111 KB (10,894 words) - 13:34, 3 July 2025
  • Thumbnail for Refracting telescope
    research purposes, the refracting telescope has been superseded by the reflecting telescope, which allows larger apertures. A refractor's magnification is calculated...
    35 KB (3,713 words) - 11:55, 3 July 2025
  • Thumbnail for List of largest optical telescopes historically
    Lists of telescopes List of optical telescopes List of largest optical reflecting telescopes List of largest optical refracting telescopes List of largest...
    23 KB (670 words) - 20:46, 7 June 2025
  • Thumbnail for Speculum metal
    the only known good reflecting surface for mirrors in reflecting telescopes. In contrast to household mirrors, where the reflecting metal layer is coated...
    11 KB (1,320 words) - 03:54, 8 April 2025
  • Thumbnail for Optical telescope
    types of optical telescope : Refracting telescopes, which use lenses and less commonly also prisms (dioptrics) Reflecting telescopes, which use mirrors...
    58 KB (8,187 words) - 18:53, 22 June 2025
  • Thumbnail for Extremely Large Telescope
    of a reflecting telescope with a 39-metre-diameter (130-foot) segmented primary mirror and a 4.2 m (14 ft) diameter secondary mirror. The telescope is equipped...
    50 KB (5,386 words) - 07:10, 11 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...
    40 KB (3,923 words) - 10:44, 3 July 2025
  • Thumbnail for Newton's reflector
    first reflecting telescope built by Sir Isaac Newton in 1668 is a landmark in the history of telescopes, being the first known reflecting telescope. It...
    14 KB (1,975 words) - 04:23, 9 May 2025
  • Thumbnail for Primary mirror
    Primary mirror (category Optical telescope components)
    light-gathering surface (the objective) of a reflecting telescope. The primary mirror of a reflecting telescope is a spherical, parabolic, or hyperbolic shaped...
    7 KB (596 words) - 03:56, 26 November 2024
  • Thumbnail for Lowell Observatory
    Discovery Telescope (LDT, formerly the Discovery Channel Telescope) located near Happy Jack, Arizona. This 4.3-meter reflecting telescope is the fifth-largest...
    22 KB (2,290 words) - 20:47, 23 June 2025
  • Thumbnail for Diffraction spike
    diffracting around the support vanes of the secondary mirror in reflecting telescopes, or edges of non-circular camera apertures, and around eyelashes...
    12 KB (1,191 words) - 23:24, 3 April 2025
  • Thumbnail for Three-mirror anastigmat
    A three-mirror anastigmat is an anastigmat telescope built with three curved mirrors, enabling it to minimize all three main optical aberrations – spherical...
    12 KB (1,378 words) - 22:41, 21 June 2025
  • Thumbnail for James Gregory (mathematician)
    spelling. He described an early practical design for the reflecting telescope – the Gregorian telescope – and made advances in trigonometry, discovering infinite...
    20 KB (2,143 words) - 18:09, 23 June 2025
  • optical reflecting telescope with parabolic mirrors 1667 – Paris Observatory 1668 – Isaac Newton constructs the first "practical" reflecting telescope, the...
    30 KB (3,161 words) - 11:11, 24 May 2025
  • Thumbnail for 40-foot telescope
    William Herschel's 40-foot telescope, also known as the Great Forty-Foot telescope, was a reflecting telescope constructed between 1785 and 1789 at Observatory...
    15 KB (1,847 words) - 19:49, 22 October 2024
  • Thumbnail for Yerkes Observatory
    nixie tube displays for its operation. In the late 1960s a 40-inch reflecting telescope was added to the observatory complex. The 41 inch was finished by...
    62 KB (5,556 words) - 19:02, 27 May 2025
  • list of large optical telescopes. For telescopes larger than 3 meters in aperture see List of largest optical reflecting telescopes. This list combines...
    64 KB (2,309 words) - 06:00, 3 June 2025
  • Thumbnail for Isaac Newton
    described a precursor to the modern wind tunnel. Newton built the first reflecting telescope and developed a sophisticated theory of colour based on the observation...
    174 KB (18,638 words) - 17:50, 2 July 2025
  • infrared telescopes List of largest optical reflecting telescopes Misc History of the telescope "The Telescope". Rice University: The Galileo Project....
    6 KB (306 words) - 14:33, 23 November 2024
  • Thumbnail for Southern Astrophysical Research Telescope
    Southern Astrophysical Research Telescope List of largest optical reflecting telescopes List of observatories SOAR Telescope Official Site "FEA Roundup: Design...
    5 KB (491 words) - 18:34, 23 June 2025
  • Thumbnail for Galileo National Telescope
    in March–April and September–October. The TNG is an altazimuthal reflecting telescope with a Ritchey-Chretien optical configuration and a flat tertiary...
    4 KB (521 words) - 16:04, 20 November 2024