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  2. Primary mirror - Wikipedia

    en.wikipedia.org/wiki/Primary_mirror

    The largest optical telescope in the world as of 2009 to use a non-segmented single-mirror as its primary mirror is the 8.2 m (27 ft) Subaru telescope of the National Astronomical Observatory of Japan, located in Mauna Kea Observatory on Hawaii since 1997; [3] [better source needed] however, this is not the largest diameter single mirror in a telescope, the U.S./German/Italian Large Binocular ...

  3. James Webb Space Telescope - Wikipedia

    en.wikipedia.org/wiki/James_Webb_Space_Telescope

    Each panel consists of three primary mirror segments and had to be folded to allow the space telescope to be installed in the fairing of the Ariane rocket for the launch of the telescope. On 7 January 2022, NASA deployed and locked in place the port-side wing, [ 207 ] and on 8 January, the starboard-side mirror wing.

  4. List of largest optical reflecting telescopes - Wikipedia

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

    Scale comparison between the primary mirrors of the Hubble Space Telescope, James Webb Space Telescope, and the proposed LUVOIR-B and LUVOIR-A. Selected large telescopes which are in detailed design or pre-construction phases: Large UV Optical Infrared Surveyor (LUVOIR), a proposed space telescope for launch in the mid 2030s.

  5. Optical Telescope Element - Wikipedia

    en.wikipedia.org/wiki/Optical_Telescope_Element

    The mirror assembly from the front with primary mirrors attached, November 2016 The secondary mirror being cleaned with carbon dioxide snow. Optical Telescope Element (OTE) is a sub-section of the James Webb Space Telescope, a large infrared space telescope launched on 25 December 2021, [1] consisting of its main mirror, secondary mirrors, the framework and controls to support the mirrors, and ...

  6. Three-mirror anastigmat - Wikipedia

    en.wikipedia.org/wiki/Three-mirror_anastigmat

    The James Webb Space Telescope is a three-mirror anastigmat featuring an ellipsoidal primary, hyperboloidal secondary, and ellipsoidal tertiary. [8] The Euclid mission uses a Korsch telescope. The "Cambridge University Three-Mirror Telescope". project includes a 100 mm working model built in 1985 and a 500 mm prototype built in 1986.

  7. Segmented mirror - Wikipedia

    en.wikipedia.org/wiki/Segmented_mirror

    The 18 mirror segments of the James Webb Space Telescope were mostly fabricated in 2011. [11] The space telescope was launched by an Ariane 5 from Guiana Space Centre on December 25, 2021. [ 12 ]

  8. Webb telescope spots record number of stars in distant galaxy

    www.aol.com/news/webb-telescope-spots-record...

    A phenomenon called gravitational lensing turned a galaxy into a "hall of mirrors of cosmic proportions," allowing for the discovery. ... NASA's powerful Webb Telescope has spotted more than 40 ...

  9. First-surface mirror - Wikipedia

    en.wikipedia.org/wiki/First-surface_mirror

    Technicians assemble 6 of the 18 first-surface mirrors used in the James Webb Space Telescope. A first-surface mirror or front-surface mirror (also commonly abbreviated FS mirror or FSM) is a mirror with the reflective surface being above a backing, as opposed to the conventional, second-surface mirror with the reflective surface behind a ...

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