[{"n": "Optical telescope", "u": "/e/optical-telescopes/optical-telescope/", "s": "An instrument that gathers visible light to magnify distant objects."}, {"n": "Amateur telescope making", "u": "/e/optical-telescopes/amateur-telescope-making/", "s": "Building telescopes as a hobby for enjoyment, economy, or research."}, {"n": "Antarctica Schmidt telescopes", "u": "/e/optical-telescopes/antarctica-schmidt-telescopes/", "s": "Three small wide-field Schmidt telescopes at Dome A, Antarctica."}, {"n": "Asteroid Terrestrial-impact Last Alert System", "u": "/e/optical-telescopes/asteroid-terrestrial-impact-last-alert-system/", "s": "Robotic survey providing days to weeks of warning for smaller asteroid impacts."}, {"n": "BlackGEM", "u": "/e/optical-telescopes/blackgem/", "s": "Array of telescopes hunting optical counterparts to gravitational waves."}, {"n": "Bok Telescope", "u": "/e/optical-telescopes/bok-telescope/", "s": "Largest telescope operated solely by Steward Observatory."}, {"n": "Bradford Robotic Telescope", "u": "/e/optical-telescopes/bradford-robotic-telescope/", "s": "Autonomous telescope for schools and individuals worldwide."}, {"n": "CoRoT", "u": "/e/optical-telescopes/corot/", "s": "First space telescope dedicated to detecting transiting exoplanets."}, {"n": "Dragonfly Telephoto Array", "u": "/e/optical-telescopes/dragonfly-telephoto-array/", "s": "Ground-based array of telephoto lenses for ultra-low surface brightness galaxies."}, {"n": "ESA Optical Ground Station", "u": "/e/optical-telescopes/esa-optical-ground-station/", "s": "ESA's ground observatory for space debris and quantum communication experiments."}, {"n": "Evryscope", "u": "/e/optical-telescopes/evryscope/", "s": "Rapid-cadence gigapixel telescope array detecting the first naked-eye superflare."}, {"n": "Finderscope", "u": "/e/optical-telescopes/finderscope/", "s": "A small auxiliary telescope for aiming a larger telescope."}, {"n": "Flyeye", "u": "/e/optical-telescopes/flyeye/", "s": "ESA's fly-eye telescope for detecting near-Earth objects before impact."}, {"n": "GOTO (telescope array)", "u": "/e/optical-telescopes/goto-telescope-array/", "s": "Robotic optical array for gravitational-wave and multi-messenger follow-up."}, {"n": "James Gregory Telescope", "u": "/e/optical-telescopes/james-gregory-telescope/", "s": "Largest working optical telescope in the UK."}, {"n": "Kilodegree Extremely Little Telescope", "u": "/e/optical-telescopes/kilodegree-extremely-little-telescope/", "s": "Two robotic telescopes surveying bright stars for transiting exoplanets."}, {"n": "LAMOST", "u": "/e/optical-telescopes/lamost/", "s": "A Chinese meridian reflecting Schmidt telescope for wide-field spectroscopy."}, {"n": "Livermore Optical Transient Imaging System", "u": "/e/optical-telescopes/livermore-optical-transient-imaging-system/", "s": "Automated telescope for rapid optical follow-up of gamma-ray bursts."}, {"n": "Mercator Telescope", "u": "/e/optical-telescopes/mercator-telescope/", "s": "1.2 m telescope on La Palma for exoplanet research."}, {"n": "MINERVA-Australis", "u": "/e/optical-telescopes/minerva-australis/", "s": "Southern hemisphere exoplanet follow-up observatory supporting NASA's TESS mission."}, {"n": "Miniature Exoplanet Radial Velocity Array", "u": "/e/optical-telescopes/miniature-exoplanet-radial-velocity-array/", "s": "A ground-based robotic array for exoplanet discovery via photometry and spectroscopy."}, {"n": "MOST (spacecraft)", "u": "/e/optical-telescopes/most-spacecraft/", "s": "Canada's first space telescope and smallest in orbit for nearly a decade."}, {"n": "Navy Precision Optical Interferometer", "u": "/e/optical-telescopes/navy-precision-optical-interferometer/", "s": "World's largest-baseline optical interferometer, operated by the Naval Research Laboratory."}, {"n": "Near Earth Object Surveillance Satellite", "u": "/e/optical-telescopes/near-earth-object-surveillance-satellite/", "s": "Canadian microsatellite searching for asteroids inside Earth's orbit."}, {"n": "Nordic Optical Telescope", "u": "/e/optical-telescopes/nordic-optical-telescope/", "s": "A 2.56-metre telescope in the Canary Islands, active since 1988."}, {"n": "Pan-STARRS", "u": "/e/optical-telescopes/pan-starrs/", "s": "Surveying the sky for moving or variable objects continually."}, {"n": "PROMPT Telescopes", "u": "/e/optical-telescopes/prompt-telescopes/", "s": "Six robotic telescopes for rapid gamma-ray burst afterglow observations."}, {"n": "Radcliffe Telescope", "u": "/e/optical-telescopes/radcliffe-telescope/", "s": "74-inch reflector, largest in Southern Hemisphere upon completion in 1948."}, {"n": "Richard B. Dunn Solar Telescope", "u": "/e/optical-telescopes/richard-b-dunn-solar-telescope/", "s": "A vertical-axis solar telescope specializing in high-resolution imaging and spectroscopy."}, {"n": "Robotic Optical Transient Search Experiment", "u": "/e/optical-telescopes/robotic-optical-transient-search-experiment/", "s": "Multi-telescope experiment for optical afterglow of gamma-ray bursts."}, {"n": "Samuel Oschin telescope", "u": "/e/optical-telescopes/samuel-oschin-telescope/", "s": "A 48-inch Schmidt camera at Palomar Observatory."}, {"n": "Small telescope", "u": "/e/optical-telescopes/small-telescope/", "s": "Small telescopes dominate amateur astronomy and key research fields."}, {"n": "SPECULOOS", "u": "/e/optical-telescopes/speculoos/", "s": "Searching for Earth-sized exoplanets around ultra-cool stars and brown dwarfs."}, {"n": "Sunspot Solar Observatory", "u": "/e/optical-telescopes/sunspot-solar-observatory/", "s": "Solar observatory closed indefinitely after mercury leak in flagship telescope."}, {"n": "Synoptic Optical Long-term Investigations of the Sun", "u": "/e/optical-telescopes/synoptic-optical-long-term-investigations-of-the-sun/", "s": "A synoptic facility for long-term solar observations."}, {"n": "UK Schmidt Telescope", "u": "/e/optical-telescopes/uk-schmidt-telescope/", "s": "A 1.24 m Schmidt survey telescope at Siding Spring Observatory."}, {"n": "Uppsala Southern Schmidt Telescope", "u": "/e/optical-telescopes/uppsala-southern-schmidt-telescope/", "s": "A Schmidt telescope used for asteroid and comet discovery in Australia."}, {"n": "Vera C. Rubin Observatory", "u": "/e/optical-telescopes/vera-c-rubin-observatory/", "s": "A wide-field telescope surveying the southern sky every few nights."}, {"n": "William Herschel Telescope", "u": "/e/optical-telescopes/william-herschel-telescope/", "s": "Third largest optical telescope at its 1987 completion."}, {"n": "Wisconsin H-Alpha Mapper", "u": "/e/optical-telescopes/wisconsin-h-alpha-mapper/", "s": "A 0.6 m telescope mapping hydrogen-alpha in the warm ionized medium."}, {"n": "3.6m Devasthal Optical Telescope", "u": "/e/optical-telescopes/3-6m-devasthal-optical-telescope/", "s": "Asia's largest reflecting telescope, activated in 2016."}, {"n": "3.67 m Advanced Electro Optical System Telescope", "u": "/e/optical-telescopes/3-67-m-advanced-electro-optical-system-telescope/", "s": "Largest U.S. optical telescope for satellite tracking."}, {"n": "40-foot telescope", "u": "/e/optical-telescopes/40-foot-telescope/", "s": "William Herschel's 40-foot reflecting telescope, largest for 50 years."}, {"n": "Alfred Jensch Telescope", "u": "/e/optical-telescopes/alfred-jensch-telescope/", "s": "Largest telescope in Germany and largest Schmidt camera worldwide."}, {"n": "Anglo-Australian Telescope", "u": "/e/optical-telescopes/anglo-australian-telescope/", "s": "A 3.9-metre equatorial telescope at Siding Spring Observatory."}, {"n": "ANU 2.3 m Telescope", "u": "/e/optical-telescopes/anu-2-3-m-telescope/", "s": "Optical telescope with thin mirror, altazimuth mount, and co-rotating building."}, {"n": "Aristarchos 2.3 m Telescope", "u": "/e/optical-telescopes/aristarchos-2-3-m-telescope/", "s": "Largest telescope in Greece and the Balkans."}, {"n": "BTA-6", "u": "/e/optical-telescopes/bta-6/", "s": "World's largest telescope from 1975 to 1990, pioneering altazimuth mount."}, {"n": "C. Donald Shane telescope", "u": "/e/optical-telescopes/c-donald-shane-telescope/", "s": "Second-largest optical telescope in the world at its 1959 commissioning."}, {"n": "Canada–France–Hawaii Telescope", "u": "/e/optical-telescopes/canada-france-hawaii-telescope/", "s": "3.58-meter optical/infrared telescope on Mauna Kea since 1979."}, {"n": "Crossley telescope", "u": "/e/optical-telescopes/crossley-telescope/", "s": "36-inch reflector at Lick Observatory, used 1895–2010."}, {"n": "Daniel K. Inouye Solar Telescope", "u": "/e/optical-telescopes/daniel-k-inouye-solar-telescope/", "s": "World's largest solar telescope, observing the Sun in visible to near-infrared."}, {"n": "ESO 3.6 m Telescope", "u": "/e/optical-telescopes/eso-3-6-m-telescope/", "s": "Optical reflecting telescope at La Silla, Chile, since 1977."}, {"n": "Sarah L. Krizmanich Telescope", "u": "/e/optical-telescopes/sarah-l-krizmanich-telescope/", "s": "A 0.8-m reflector used for undergraduate research and outreach at Notre Dame."}, {"n": "Southern African Large Telescope", "u": "/e/optical-telescopes/southern-african-large-telescope/", "s": "Largest optical telescope in the Southern Hemisphere, optimized for spectroscopy."}, {"n": "Southern Astrophysical Research Telescope", "u": "/e/optical-telescopes/southern-astrophysical-research-telescope/", "s": "Modern 4.1-meter telescope on Cerro Pachón, Chile, commissioned in 2003."}, {"n": "Space Surveillance Telescope", "u": "/e/optical-telescopes/space-surveillance-telescope/", "s": "A US Space Force telescope tracking space debris and near-Earth objects."}, {"n": "Swiss 1.2-metre Leonhard Euler Telescope", "u": "/e/optical-telescopes/swiss-1-2-metre-leonhard-euler-telescope/", "s": "Fully automatic 1.2-metre reflector used for exoplanet detection and characterization."}, {"n": "VLT Survey Telescope", "u": "/e/optical-telescopes/vlt-survey-telescope/", "s": "Largest telescope designed exclusively for visible-light sky surveys."}, {"n": "Wide Field Survey Telescope", "u": "/e/optical-telescopes/wide-field-survey-telescope/", "s": "Chinese time-domain survey telescope with a 2.5-metre mirror."}, {"n": "Yapp telescope", "u": "/e/optical-telescopes/yapp-telescope/", "s": "36-inch Cassegrain reflector, largest at Greenwich until the late 1950s."}, {"n": "Yerkes 41-inch reflector", "u": "/e/optical-telescopes/yerkes-41-inch-reflector/", "s": "40-inch Ritchey–Chrétien reflector completed in 1968 at Yerkes Observatory."}, {"n": "Arago telescope", "u": "/e/optical-telescopes/arago-telescope/", "s": "38 cm refractor at Paris Observatory, used for photometry and double stars."}, {"n": "Baden-Powell's unilens", "u": "/e/optical-telescopes/baden-powell-s-unilens/", "s": "The simplest telescope, using one lens for up to 4× magnification."}, {"n": "Carnegie telescope", "u": "/e/optical-telescopes/carnegie-telescope/", "s": "Twin refractor for astrophotographic surveys of stellar motion."}, {"n": "Monocular", "u": "/e/optical-telescopes/monocular/", "s": "A compact refracting telescope using prisms for an erect image."}, {"n": "Napoleon III Telescope (University of Notre Dame)", "u": "/e/optical-telescopes/napoleon-iii-telescope-university-of-notre-dame/", "s": "Historic 6-inch refractor gifted by Napoleon III to Notre Dame."}, {"n": "Newall Telescope", "u": "/e/optical-telescopes/newall-telescope/", "s": "Once the world's largest refractor, now used for education."}, {"n": "Sheepshanks equatorial", "u": "/e/optical-telescopes/sheepshanks-equatorial/", "s": "A 6.7-inch refractor donated by Richard Sheepshanks, installed at Greenwich in 1838."}, {"n": "Shuckburgh telescope", "u": "/e/optical-telescopes/shuckburgh-telescope/", "s": "Influential 4.1-inch equatorial refractor completed in 1791."}, {"n": "Spotting scope", "u": "/e/optical-telescopes/spotting-scope/", "s": "A compact portable telescope for high-magnification observation of distant objects."}]