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List of astronomical observatories

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Legend
Space observatory
Gravitational-wave detector
Antimatter observatory
Airborne observatory
Radio observatory
Microwave observatory
Ground-based observatory
Solar observatory
Neutrino detector
Cosmic-ray observatory
Educational observatory

This is a partial list of astronomical observatories ordered by name, along with initial dates of operation (where an accurate date is available) and location. The list also includes a final year of operation for many observatories that are no longer in operation. While other sciences, such as volcanology and meteorology, also use facilities called observatories for research and observations, this list is limited to observatories that are used to observe celestial objects.

Astronomical observatories are mainly divided into four categories: space-based, airborne, ground-based, and underground-based.

Many modern telescopes and observatories are located in space to observe astronomical objects in wavelengths of the electromagnetic spectrum that cannot penetrate the Earth's atmosphere (such as ultraviolet radiation, X-rays, and gamma rays) and are thus impossible to observe using ground-based telescopes.[1] Being above the atmosphere, these space observatories can also avoid the effects of atmospheric turbulence that plague ground based telescopes, although new generations of adaptive optics telescopes have since then dramatically improved the situation on the ground. The space high vacuum environment also frees the detectors from the ancestral diurnal cycle due to the atmospheric blue light background of the sky, thereby increasing significantly the observation time.

An intermediate variant is the airborne observatory, specialised in the infrared wavelengths of the electromagnetic spectrum, that conduct observations above the part of the atmosphere containing water vapor that absorbs them, in the stratosphere.

Historically, astronomical observatories consisted generally in a building or group of buildings where observations of astronomical objects such as sunspots, planets, asteroids, comets, stars, nebulae, and galaxies in the visible wavelengths of the electromagnetic spectrum were conducted. At first, for millennia, astronomical observations have been made with naked eyes. Then with the discovery of optics, with the help of different types of refractor telescopes and later with reflector telescopes. Their use allowed to dramatically increase both the collecting power and limit of resolution, thus the brightness, level of detail and apparent angular size of distant celestial objects allowing them to be better studied and understood. Following the development of modern physics, new ground based facilities have been constructed to conduct research in the radio and microwave wavelengths of the electromagnetic spectrum, with radio telescopes and dedicated microwave telescopes.

Modern astrophysics has extended the field of study of celestial bodies to non-electromagnetic vectors, such as neutrinos, neutrons and cosmic-rays or gravitational waves. Thus new types of observatories have been developed. Interferometers are at the core of gravitational wave detectors. In order to limit the natural or artificial background noise, most particle detector based observatories are built deep underground.

Observatories

[edit]
Name Established Location
Abastumani Astrophysical Observatory 1932 Abastumani, Georgia
Abu Reyhan-e Birooni Observatory 1976 Shiraz University, Shiraz, Iran
Adirondack Public Observatory Tupper Lake, New York, US
Aditya-L1 2023 Sun-Earth L1
Adolphson Observatory 2013 Monmouth, Illinois, US
Airdrie Public Observatory 1896 Airdrie, Scotland, UK
Aker Observatory 1995 Safford, Arizona, US
Aldershot Observatory 1906 Aldershot, Hampshire, England, UK
Algonquin Radio Observatory 1959 Algonquin Provincial Park, Ontario, Canada
Allegheny Observatory 1859 Pittsburgh, Pennsylvania, US
Ametlla de Mar Observatory 1992 l'Ametlla de Mar, Catalonia, Spain
AMiBA 2006 Mauna Loa, Hawaii, US
Anderson Mesa Station 1959 Flagstaff, Arizona, US
Andrushivka Astronomical Observatory 2001 Andrushivka, Zhytomyr Oblast, Ukraine
Angell Hall Observatory 1927 Ann Arbor, Michigan, US
Ankara University Observatory 1963 Gölbaşı, Ankara, Turkey
Antarctic Muon and Neutrino Detector Array 2002 Antarctica
Antarctic Submillimeter Telescope and Remote Observatory 1994–2005 Antarctica
ANTARES 2008 In the Mediterranean Sea near Toulon, France
Apache-Sitgreaves Observatory 2005 Overgaard, Arizona, US
Apache Point Observatory 1985 Sunspot, New Mexico, US
Apatity Cosmic-Ray Station Apatity, Russia
Apollo Observatory 1969 Dayton, Ohio, US
Arcetri Observatory Arcetri, Florence, Italy
Arecibo Observatory 1963 Arecibo, Puerto Rico, US
Argentine Institute of Radio Astronomy 1966 Berazategui Partido, Buenos Aires Province, Argentina
Armagh Observatory 1790 Armagh, UK
Aryabhatta Research Institute of Observational Sciences 1954 Nainital, Uttarakhand, India
Ashton Observatory 1983 Baxter, Iowa, US
Asiago Astrophysical Observatory 1942 Asiago, Italy
Assheton Observatory 1860 Lancashire, UK
Astron (defunct) 1983–1989 Highly eccentric Earth orbit
Astronomical Observatory Aurora 2011 Hechingen, Germany
Astronomical Observatory of Lisbon 1867 Lisbon, Portugal
Astronomy Centre 1982 Todmorden, England
Astronomy Tower of the Sorbonne 1885–1909 (only for amateur use since 1980) Paris, France
Astrophysical Institute Potsdam 1992 Potsdam, Germany
Atacama Pathfinder Experiment (APEX) 2003 Llano de Chajnantor Observatory, Chile
Australia Telescope Compact Array 1988 Narrabri, Australia
Australian Astronomical Observatory 1971 Coonabarabran, Australia
Badlands Observatory 2000 Quinn, South Dakota, US
Baikal Deep Underwater Neutrino Telescope 1993 Baikal Lake, Russia
Bangladesh Astronomical Observatory Archived 2020-06-09 at the Wayback Machine 2015 Dhaka, Bangladesh
Baker Observatory 1980 Marshfield, Missouri, US
Baksan Neutrino Observatory 1977 Prielbrusye, Baksan Valley, Russia
Ball State University Observatory Muncie, Indiana, US
Barnard Observatory (defunct) 1859 Oxford, Mississippi, US
Bareket Observatory 1990 Maccabim, Israel
Barnett Observatory 1960 Chesterfield, England, UK
Bayfordbury Observatory 1969 Hertfordshire, England, UK
Behlen Observatory 1972 Mead, Nebraska, US
Beijing Astronomical Observatory 1958 Beijing, China
Beijing Ancient Observatory 1442 Beijing, China
Belgrade Observatory 1887 Belgrade, Serbia
Belogradchik Observatory 1961 Belogradchik, Bulgaria
Benmore Peak Observatory 1996 Mackenzie Basin, South Island, New Zealand
BeppoSAX (defunct) 1996–2003 Low Earth orbit
Bergisch Gladbach Observatory Bergisch Gladbach, Germany
Berlin Observatory 1711 Germany
Besançon Observatory 1882 Besançon, France
BESS 1993 Antarctic
Bidston Observatory 1849 Bidston, England, UK
Big Bear Lake Solar Observatory 1969 Big Bear City, California, US
Bisdee Tier Optical Astronomy Observatory 2010 Bisdee Tier, Spring Hill, Tasmania, Australia
Black Moshannon Observatory (defunct) 1972 Pennsylvania, US
Blackett Observatory 1930s Wiltshire, England, UK
Blue Mesa Observatory (defunct) 1967 New Mexico, US
Boambee Observatory 1987 Boambee, New South Wales, Australia
Bohyunsan Optical Astronomy Observatory (BOAO) 1996 Youngchun, South Korea
BOOTES 1985 Spain
Bordeaux Observatory 1878 Floirac, France
Bosscha Observatory 1923 Lembang, West Java, Indonesia
Boswell Observatory (defunct) 1883 Crete, Nebraska, US
Bowman Observatory 1940 Greenwich, Connecticut, US
Boyden Observatory 1889 Bloemfontein, South Africa
Bradstreet Observatory 1996 St. Davids, Pennsylvania, US
Bradley Observatory 1950 Decatur, Georgia, US
Braeside Observatory (defunct) 1976 Flagstaff, Arizona, US
Brera Observatory 1764 Milan, Italy
Bridgewater State University Observatory 2012 Bridgewater, Massachusetts, US
Brooks Observatory Toledo, Ohio, US
Brooks Astronomical Observatory 1964 Mount Pleasant, Michigan, US
Brorfelde Observatory Holbæk, Denmark
Bucharest Astronomical Observatory 1910 Bucharest, Romania
Bucknell Observatory Lewisburg, Pennsylvania, US
Burrell Memorial Observatory 1940 Berea, Ohio, US
Byurakan Observatory 1946 Mount Aragats, Armenia
Cagigal Observatory 1888 Caracas, Venezuela
Cagliari Observatory 1899 Cagliari, Sardinia
Calais Observatory (defunct) 1857 Calais, Maine
Calar Alto Observatory 1975 Almería, Spain
Caltech Submillimeter Observatory (defunct) 1986 Mauna Kea, Hawaii, US
Cambridge Observatory 1823 Cambridge, UK
Camille Flammarion Observatory 1883 Juvisy-sur-Orge, France
Campbelltown Rotary Observatory 2000 Campbelltown, NSW, Australia
Campo Imperatore Near-Earth Object Survey 2001 Campo Imperatore, Italy
Canopus Hill Observatory Hobart, Tasmania, Australia
Capilla Peak Observatory Albuquerque, New Mexico, US
Capodimonte Observatory 1812 Naples, Italy
Carter Observatory 1937 Wellington, New Zealand
Catania Astrophysical Observatory Catania, Italy
Cawthron Atkinson Observatory 1883 Nelson, New Zealand
Celestial Observatory Russellville, Arkansas, US
Centennial Observatory 2004 Twin Falls, Idaho, US
Center for Astrophysics | Harvard & Smithsonian 1973 Cambridge, Massachusetts, US
Cerro Armazones Observatory 1995 Atacama Desert, Chile
Cerro Tololo Inter-American Observatory 1962 Atacama Desert, Chile
Cerro Pachón Observatory 2000 Atacama Desert, Chile
Chabot Space & Science Center 1883 Oakland, California, US
Chamberlin Observatory 1890 Denver, Colorado, US
Changchun Astronomical Observatory Changchun, Jilin Province, China
Chandra X-ray Observatory 1999 Highly eccentric Earth orbit
Chianti Polifunctional Observatory 2013 San Donato in Poggio, Florence, Italy
Chico Community Observatory 2001 Chico, California, US
Chilbolton Observatory 1967 Chilbolton, UK
Cima Ekar Observing Station 1966 Asiago, Italy
Cincinnati Observatory 1843 Cincinnati, Ohio, US
City Observatory, Edinburgh 1818 Edinburgh, Scotland, UK
Clarke Observatory 1897 / 1923 Dunkirk, New York / Alliance, Ohio, US
Class of 1951 Observatory 1997 Poughkeepsie, New York, US
Cloudcroft Observatory (defunct) 1962 New Mexico, US
Coats Observatory 1883 Paisley, Scotland, UK
Coit Observatory Boston, Massachusetts, US
Collins Observatory 2003 Corning, New York, US
Collm Observatory Leipzig, Germany
Colombo University Observatory 1920s Colombo, Sri Lanka
Compton Gamma-Ray Observatory (defunct) 1991–2000 Low earth orbit
ÇOMÜ Ulupınar Observatory 2002 Çanakkale, Turkey
Concordia College Observatory Moorhead, Minnesota, US
Consell Observatory 1987 Majorca, Spain
Copenhagen University Observatory 1861 Copenhagen, Denmark
Cordell–Lorenz Observatory Sewanee, Tennessee, US
COROT 2006 Polar orbit
Cosmic Background Imager (CBI) (defunct) 1999 Llano de Chajnantor Observatory, Chile
Côte d'Azur Observatory 1988 France
Crane Observatory Topeka, Kansas, US
Crawford Observatory 1880 Cork, Ireland
Creighton University Observatory (defunct) 1886–1955 Omaha, Nebraska, US
Crimean Astrophysical Observatory 1945 Nauchnyi, Crimea
Črni Vrh Observatory 1975 Idrija, Slovenia
Cupillari Observatory La Plume, Pennsylvania, US
Custer Observatory 1927 Southold, New York, US
The Cyprus Planetarium & Observatory 2023 Nicosia, Cyprus
Daniel S. Schanck Observatory (defunct) 1865 Rutgers University, New Brunswick, New Jersey, US
Daniel Scholl Observatory (defunct) 1886–1966 Lancaster, Pennsylvania, US
Daocheng Solar Radio Telescope 2022 Daocheng County, Garze Tibetan Autonomous Prefecture, Sichuan Province, China.
Dark Sky Observatory 1981 Phillips Gap, Wilkes County, North Carolina, US
Dark Matter Particle Explorer (DAMPE) 2015 500 km LEO
Darling's Observatory (defunct) 1917 Duluth, Minnesota, US
Dearborn Observatory 1889 Evanston, Illinois, US
Detroit Observatory 1854 Ann Arbor, Michigan, US
David Dunlap Observatory 1935 Richmond Hill, Ontario, Canada
Dome C Antarctica
Dominion Observatory 1905 Ottawa, Ontario, Canada
Dominion Astrophysical Observatory 1918 Saanich, British Columbia, Canada
Dominion Radio Astrophysical Observatory 1960 Kaleden, British Columbia, Canada
Dunsink Observatory 1785 Dublin, Ireland
Durham University Observatory 1839 Durham, UK
Dyer Observatory 1953 Brentwood, Tennessee, US
Effelsberg 100-m Radio Telescope 1972 Bonn, Germany
Ege University Observatory 1965 Kemalpaşa, İzmir, Turkey
Einstein Probe 2024 Low Earth orbit
Einstein Observatory (defunct) 1978 Low Earth orbit
Elginfield Observatory 1969 Middlesex Centre, Ontario, Canada
Ellis Observatory 2004 Sterling Hill Mining Museum, Ogdensburg, New Jersey, US
Embry-Riddle Observatory 2005 Daytona Beach, Florida, US
Eskdalemuir Observatory 1908 Dumfries and Galloway, Scotland, UK
European Gravitational Observatory 2003 Cascina , Italy
Euclid Telescope 2023 Earth–Sun L2 Lagrangian point
European Southern Observatory
1962
  • 1969
  • 1989
  • 2005
  • 1998
  • 1999
  • 2026
 Atacama Desert, Chile
Fabra Observatory 1906 Barcelona, Spain
Fan Mountain Observatory 1966 Albemarle County, Virginia, US
Five-hundred-meter Aperture Spherical Radio Telescope 2013 Duyun, Pingtang County, Guizhou Province, China
Félix Aguilar Observatory 1965 San Juan, Argentina
Fernbank Observatory Atlanta, Georgia, US
Fermi Gamma-ray Space Telescope 2008 Orbit
Fick Observatory 1966 Boone, Iowa, US
Five College Radio Astronomy Observatory (defunct) 1976–2011 New Salem, Massachusetts, US
Flarestar Observatory San Gwann, Malta
Foggy Bottom Observatory 1951 Hamilton, New York, US
Foothill Observatory Los Altos Hills, California, US
Ford Observatory 1998 Ithaca, New York, US
Fox Observatory Sunrise, Florida, US
Fox Park Public Observatory 1999 Potterville, Michigan, US
Francis Marion University Observatory 1982 Florence, South Carolina, US
Fred Lawrence Whipple Observatory 1968 Mount Hopkins, Arizona, US
Fremont Peak Observatory 1986 San Juan Bautista, California, US
Frosty Drew Observatory 1980s Charlestown, Rhode Island, US
Fuertes Observatory 1917 Ithaca, New York, US
Galaxy Evolution Explorer (GALEX) 2003 Caltech, Jet Propulsion Laboratory, California, US
Gaocheng Astronomical Observatory 1276 Dengfeng, Henan, China
Gauribidanur Radio Observatory 1976 Gauribidanur, Karnataka, India
Gemini Observatory 1999 Southern Operations Center: La Serena, Chile; Northern Operations Center: Hilo, Hawaii, US
George Observatory 1989 Brazos Bend State Park, near Houston, Texas, US
Giant Meterwave Radio Telescope (GMRT) 1995 Pune, Maharashtra, India
Gifford Observatory 1912 Wellington, New Zealand
Girawali Observatory 2006 Pune, Maharashtra, India
Glen D. Riley Observatory 1973 Naperville, Illinois, US
Godlee Observatory 1902 Manchester, England, UK
Goodsell Observatory 1887 Northfield, Minnesota, US
Goethe Link Observatory 1939 Brooklyn, Indiana, US
Goldendale Observatory 1973 Goldendale, Washington, US
Gornergrat (HFSJG) (defunct) 1967–2005 Gornergrat, Switzerland
Granat (defunct) 1989–1999 Highly eccentric Earth orbit
Gran Telescopio Canarias 2006 Canary Islands, Spain
Grant O. Gale Observatory 1984 Grinnell, Iowa, US
Green Bank Telescope Green Bank, West Virginia, US
Green Point Observatory 1961 Sutherland, New South Wales, Australia
Grenfell Observatory 2012 Corner Brook, Newfoundland and Labrador, Canada
Griffith Observatory 1935 Los Angeles, California, US
Guillermo Haro Observatory 1972 Cananea, Sonora, Mexico
Gyarah Sidi Agra, Uttar Pradesh, India
HALCA (defunct) 1997–2005 Elliptical earth-centered orbit
Haleakala Observatory Maui, Hawaii, US
Halley Observatory 1987 Heesch, Netherlands
Hamburg Observatory 1803 Hamburg, Germany
Hat Creek Radio Observatory 1950s Shasta County, California, US
Hard Labor Creek Observatory Atlanta, Georgia, US
Space Hard X-Ray Modulation Telescope (HXMT) 2017 550 km LEO
Hartung–Boothroyd Observatory 1974 Ithaca, New York, US
Hartebeesthoek Radio Astronomy Observatory 1961 Gauteng, South Africa
Hartwell House 1831 Hartwell, Buckinghamshire, UK
Harvard College Observatory 1839 Cambridge, Massachusetts, US
Haute-Provence Observatory 1937 Alpes-de-Haute-Provence, France
Haystack Observatory 1964 Westford, Massachusetts, US
Hector J Robinson Observatory 1964 Lincoln Park, Michigan, US
Helium and Lead Observatory 2012 Sudbury, Ontario, Canada
Helmos Observatory 2007 Mount Helmos, Greece
Helsinki University Observatory 1834 Helsinki/Kirkkonummi, Finland
Herrett Observatory 2004 Twin Falls, Idaho, US
Herschel Space Observatory 2009 Earth–Sun L2 point
Hidden Valley Observatory 1960s Rapid City, South Dakota, US
Hida Observatory, Kyoto University 1968 Takayama, Gifu, Japan
Heyden Observatory, Georgetown University 1844 Washington, D.C., US
High Altitude Water Cherenkov Observatory 2015 Sierra Negra, Puebla, Mexico
High Energy Stereoscopic System 2002 Khomas Region, Namibia
Highland Road Park Observatory 1997 Baton Rouge, Louisiana, US
Hinode 2006 Low Earth orbit
Hirsch Observatory 1942 Troy, New York, US
Hobbs Observatory 1974 Fall Creek, Wisconsin, US
Hoher List Observatory 1954 Daun, Germany
Holcomb Observatory and Planetarium 1954 Indianapolis, Indiana, US
Hong Kong Observatory 1883 Tsim Sha Tsui, Kowloon, Hong Kong
Hoober Observatory 1993 Rotherham, UK
Hopkins Observatory 1838 Williamstown, Massachusetts, US
Howell Observatory Starkville, Mississippi, US
Hradec Králové Observatory 1961 Hradec Králové, Czech Republic
Huairou Solar Observing Station Beijing, China
Hubble Space Telescope 1990 Low Earth orbit
Huggins Observatory defunct 1856 London, England, UK
Hume Cronyn Memorial Observatory 1940 London, Ontario, Canada
Hyde Memorial Observatory 1977 Lincoln, Nebraska, US
IceCube Neutrino Observatory 2010 Amundsen–Scott South Pole Station
Indian Astronomical Observatory 2001 Hanle, Ladakh, India
Insperity Observatory 2008 Humble, Texas, US
Instituto de Astrofísica de Canarias 1975 Canary Islands, Spain
INTEGRAL 2002 Highly eccentric Earth orbit
Infrared Astronomical Satellite (IRAS) (defunct) January–November 1983 Earth orbit
Infrared Space Observatory (ISO) (defunct) 1995–1998 Earth orbit
Innsbruck Observatory Innsbruck, Austria
IRAM 30m telescope 1984 Pico Veleta, Spain
IRAM Plateau de Bure Interferometer 1988 Gap, Hautes-Alpes, France
Iranian National Observatory 2017 Mount Gargash, Iran
Isaac Newton Group of Telescopes 1979 La Palma, Spain
Isasc Roberts' Observatory (defunct) 1890 Crowborough, UK
Iso-Heikkilä Observatory (defunct) 1935 (only amateur use since 1972) Turku, Finland
Constantinople Observatory of Taqi ad-Din 1577 Constantinople, Turkey
Istanbul University Observatory 1936 Istanbul, Turkey
Istituto Ricerche Solari Locarno, IRSOL 1960 Locarno, Switzerland
IXPE 2021 Earth orbit
Jack C. Davis Observatory 2002 Carson City, Nevada, US
Astronomical Observatory of the Jagiellonian University 1792 Kraków, Poland
James Clerk Maxwell Telescope 1987 Mauna Kea, Hawaii, US
James Gregory Telescope 1962 St. Andrews, UK
James Webb Space Telescope 2021 Earth–Sun L2 Lagrangian point
James Wylie Shepherd Observatory 2009 Montevallo, Alabama, US
Jakarta Observatory 1968 Jakarta, Indonesia
Jantar Mantar 1727 Jaipur, Rajasthan, India
Jena Observatory 1962 Jena, Germany
Jewett Observatory 1953 Pullman, Washington, US
Jodrell Bank Observatory 1945 Cheshire, England, UK
JAC Johor Astronomy 2014 Johor, Malaysia
Jones Observatory 1936 Chattanooga, Tennessee, US
Jordan Hall of Science 2006 Notre Dame, Indiana
Judson B. Coit Observatory Boston, Massachusetts, US
KAIRA 2011 Kilpisjarvi, Finland
Khajeh Nasiredin Observatory ~1980 Tabriz University, Tabriz, Iran
Kamioka Observatory 1983 Hida, Gifu, Japan
Kanzelhoehe Solar Observatory 1943 Villach, Austria
Karl Schwarzschild Observatory 1960 Jena, Germany
Keck Observatory 1993 Mauna Kea, Hawaii, US
Keeble Observatory 1963 Ashland, Virginia, US
Keele Observatory 1962 Keele University, England, UK
Kennon Observatory 1939 Oxford, Mississippi, US
Kepler Space Observatory 2009 Earth-trailing heliocentric orbit
Kevola Observatory 1963 Kevola, Finland
Kielder Observatory 2008 Kielder Forest, Northumberland, England, UK
King's Observatory (defunct) 1769 Greater London, England, UK
Kirkwood Observatory 1901 Bloomington, Indiana, US
Kitami Observatory Hokkaidō, Japan
Kitt Peak National Observatory 1958 Tucson, Arizona, US
Kleť Observatory 1957 České Budějovice, Czech Republic
Kodaikanal Solar Observatory 1899 Palani, Tamil Nadu, India
Konkoly Observatory 1871 Budapest, Hungary
Kopernik Observatory & Science Center 1974 Vestal, New York, US
KOSMA observatory 1985–2010 Gornergrat, Switzerland
Kottamia Astronomical Observatory 1964 Egypt
Kuffner observatory 1884 Austria
Kuiper Airborne Observatory (retired) 1974 14 km in the stratosphere
Kwasan Observatory, Kyoto University 1929 Kyoto, Japan
Kvistaberg Observatory Sweden
Kyung Hee Observatory 1992 Seoul, South Korea
Laboratoire d'Astrophysique de Grenoble 2001 Grenoble, France
Observatorio de La Cañada (La Cañada Observatory) 2002 Ávila, Spain
Ladd Observatory 1891 Providence, Rhode Island, US
Lake Afton Public Observatory 1979 Wichita, Kansas, US
Lamont–Hussey Observatory (defunct) 1928 Bloemfontein, South Africa
Landessternwarte Heidelberg-Königstuhl 1898 Königstuhl, Heidelberg, Germany
Landolt Astronomical Observatory 1939[2] Baton Rouge, Louisiana, US
La Plata Astronomical Observatory 1883 La Plata, Argentina
La Silla Observatory 1969 Atacama Desert, Chile
Large High Altitude Air Shower Observatory (LHAASO) 2019 Daocheng County, Sichuan, China
Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST) 2009 Xinglong Station, Hebei, China
Large Millimeter Telescope Sierra Negra, Puebla, Mexico
Las Brisas Observatory 1979 Colorado, US
Las Campanas Observatory La Serena, Chile
Las Cumbres Observatory Global Telescope 2005 Global network
Laws Observatory 1880 Columbia, Missouri, US
Leander McCormick Observatory 1885 Mount Jefferson, Charlottesville, Virginia, US
Lee Observatory 1873 American University of Beirut, Beirut, Lebanon
Leiden Observatory 1633 Leiden University, Leiden, Netherlands
Leipzig Observatory Leipzig, Germany
Leoncito Astronomical Complex 1986 Calingasta, San Juan, Argentina
Levenhagen Observatory Seattle, Washington, US
Lick Observatory 1881 Mount Hamilton, San Jose, California, US
LightBuckets (commercial observatory) 2007 Rodeo, New Mexico, US
LIGO 1999 Hanford Site, Washington, US & Livingston, Louisiana, US, US
Lindheimer Astrophysical Research Center (defunct) 1966–1995 Evanston, Illinois, US
Llano de Chajnantor Observatory 2005 Atacama Desert, Chile
Llano del Hato National Astronomical Observatory 1975 Mérida, Venezuela
Lockyer Technology Centre 2010 Sidmouth, Devon, England
Long Wavelength Array 2010 Socorro, New Mexico, US
Longa Vista Observatory 2010 Itatiba, SP, Brazil
Lowell Observatory
1894
  • 1959
 Flagstaff, Arizona, US
Lucknow (King of Oudh's) Observatory 1832–1848 Lucknow, India
Lulin Observatory 1999 Mount Lulin, Taiwan
Lund Observatory 1749 Lund, Sweden
Luoxue Mountain Cosmic Rays Research Center 1953 Luoxue Mountain, Yunnan Province, China
Lyon Observatory 1878 Saint-Genis-Laval, France
Macalester College Observatory Saint Paul, Minnesota, US
Macfarlane Observatory defunct 1757 Glasgow, Scotland, UK
Magdalena Ridge Observatory (under construction) 2006 Socorro County, New Mexico, US
Majorca Observatory 1991 Majorca, Spain
Malakoff Tower 1845 Recife, Brazil
Manastash Ridge Observatory 1972 Ellensburg, Washington, US
Manuel Foster Observatory (defunct) 1903 Santiago, Chile
Maragheh Observatory 1259 Maragheh, Iran
Margaret M. Jacoby Observatory 1978 Warwick, Rhode Island, US
Maria Mitchell Observatory 1908 Nantucket, Massachusetts, US
Marina Towers Observatory (Not In Use) 1989 Maritime Quarter, Swansea, Wales, UK
Markree Observatory (defunct) 1837 County Sligo, Ireland
Marseille Observatory Marseille, France
Martz Observatory Chautauqua County, New York, US
Mauna Kea Observatory 1967 Mauna Kea, Hawaii, US
Mauna Loa Solar Observatory Hawaii, US
Maynard F. Jordan Observatory 1901 Orono, Maine, US
McDonald Observatory Davis Mountains, Texas, US
McKim Observatory 1884 Greencastle, Indiana, US
McMath–Hulbert Solar Observatory 1930 Lake Angelus, Michigan, US
MDM Observatory Kitt Peak, Arizona, US
Mead Observatory 2001 Columbus, Georgia, US
Medicina Radio Observatory 1965 Medicina, Bologna, Italy
Mees Observatory Rochester, New York, US
Mehalso Observatory Erie, Pennsylvania, US
Melbourne Observatory 1862 Melbourne, Victoria, Australia
Melton Memorial Observatory 1928 Columbia, South Carolina, US
Mendenhall Observatory 2002 Stillwater, Oklahoma, US
Menke Observatory 1994 Davenport, Iowa, US
Metsähovi Observatory 1966 Kirkkonummi, Finland
Meudon Observatory 1876 Meudon, France
Meyer–Womble Observatory 1996 Mount Evans, Colorado, US
Michigan State University Observatory 1969 East Lansing, Michigan, US
Observatoire Midi-Pyrénées
 
  • 1878
  • 1733
 Headquarters: Toulouse, France
Milagro 1999 Los Alamos, New Mexico, Mexico
Miller Observatory 1976 Maiden, North Carolina, US
Mills Observatory 1938 Dundee, Scotland, UK
Mind's Eye Observatory IAU W42 2018 Sebastian, Florida, US
MMT Observatory 1979 Mount Hopkins, Arizona, US
Modine-Benstead Observatory 1963 Union Grove, Wisconsin, US
Modra Observatory 1988 Modra, Slovakia
Mohr Observatory (demolished) 1765–1780 Jakarta, Indonesia
Moletai Astronomical Observatory 1969 Moletai, Lithuania
Molonglo Observatory Synthesis Telescope (MOST) 1960 Bungendore, New South Wales, Australia
Mont Mégantic Observatory 1978 Mont Mégantic, Québec, Canada
Monterey Institute for Research in Astronomy
(Oliver Observing Station) 		1972
(1984) 		Chews Ridge, California &
Monterey, California, US
Montevideo National Observatory Montevideo, Uruguay, 34°54.6′S 56°12.8′W / 34.9100°S 56.2133°W / -34.9100; -56.2133
Moore Observatory 1978 Oldham County, Kentucky, US
Morgan–Monroe Observatory 1966 Morgan–Monroe State Forest, Indiana, US
Morris Observatory 1973 North Manchester, Indiana, US
Morrison Observatory Fayette, Missouri, US
Moscow Cosmic-Ray Station Troitsk, Russia
Mount Stony Brook Observatory 1968 Stony Brook, New York, US
Mounds Observatory Tulsa, Oklahoma, US
Mount Abu InfraRed Observatory 1995 Mount Abu, Rajasthan, India
Mount Burnett Observatory 1972 Mount Burnett, Victoria, Australia
Mount Cuba Astronomical Observatory Greenville, Delaware, US
Mount Graham International Observatory 1993 Mount Graham, Arizona, US
Mount John University Observatory 1965 Lake Tekapo, South Island, New Zealand
Mount Laguna Observatory 1968 San Diego, California, US
Mount Lemmon Observatory Tucson, Arizona, US
Mount Pleasant Radio Observatory Tasmania, Australia
Mount Stromlo Observatory 1911 Canberra, Australia
Mount Suhora Observatory 1987 Poland
Mount Wilson Observatory 1904 Mount Wilson, Los Angeles County, California, US
Mountain Skies Observatory 1997 Lyman, Wyoming, US
Mullard Radio Astronomy Observatory 1957 Cambridge, England, UK
Murchison Radio-astronomy Observatory 2012 Murchison, Western Australia, Australia
Mykolaiv Astronomical Observatory 1821 Mykolaiv, Mykolaiv Oblast, Ukraine
Nachi-Katsuura Observatory Nachikatsuura, Wakayama, Japan
Nançay Radio Telescope 1965 Nançay, France
Nanjing Astronomical Instruments Research Centre 1958 Nanjing, Jiangsu Province, China
National Astronomical Observatory (Colombia) 1803 Bogotá, Colombia
National Astronomical Observatory of Japan 1988 Headquarters: Mitaka, Tokyo, Japan
National Astronomical Observatory (Mexico) 1967 Sierra San Pedro Mártir, Baja California, Mexico
National Observatory (Brazil) 1827 Rio de Janeiro, Brazil
National Observatory of Athens 1842 Athens, Greece
National Optical Astronomy Observatory
1982 Headquarters: Tucson, Arizona, US
National Optical Observatory Turkey
National Radio Astronomy Observatory
1957 Headquarters: Charlottesville, Virginia, US
National Research Institute of Astronomy and Geophysics (NRIAG) 1903 Helwan, Egypt
National Solar Observatory 1952 Sunspot, New Mexico, US & Kitt Peak, Arizona, US
Naval Research Lab. Radio Sta. Sugar Grove, West Virginia, US 38°31.2′N 79°16.4′W / 38.5200°N 79.2733°W / 38.5200; -79.2733
Naylor Observatory 1971 Harrisburg, Pennsylvania, US
Neuchâtel Observatory 1858 Neuchâtel, Switzerland
Nice Observatory 1879 Nice, France
Nieuwland Hall (Napoleon III Telescope) 1959 Notre Dame, Indiana
Nizamia Observatory 1907 Hyderabad, India
Nordic Optical Telescope 1988 Canary Islands, Spain
Norilsk Cosmic-Ray Station Norilsk, Krasnoyarsk Krai, Russia
Norman Lockyer Observatory 1912 Sidmouth, UK
Northern Arizona University Observatory Flagstaff, Arizona, US
Northern Skies Observatory 2009 Peacham, Vermont, US
Northolt Branch Observatory 2015 London, England, UK
Northolt Branch Observatory 2, Shepherd's Bush 2016 London, England, UK
Northolt Branch Observatory 3, Blandford Forum 2017 London, England, UK
North Georgia Astronomical Observatory Dahlonega, Georgia, US
North Otago Astronomical Society Observatory Oamaru, South Island, New Zealand
Nyrölä Observatory 1997 Jyväskylän maalaiskunta, Western Finland Province, Finland
OAC (Observatorio Astronómico de Córdoba) 1871 Córdoba, Argentina
OAO (Observatorio de Aras de los Olmos) 2008 Aras de los Olmos, Valencia, Spain
O'Brien Observatory 1961 Marine on St. Croix, Minnesota, US
Observatoire du Pic de Château-Renard 1974 Saint-Véran, France
Observatorio Astronómico Nacional (Colombia) 1803 Bogotá, Colombia
Observatorio Astronomico Nacional Tonantzintla 1961 Tonantzintla, Mexico
Observatorio Solar Carl Sagan 2000 Hermosillo, Sonora, Mexico
Observatory House (defunct) 1789 Slough, UK
Observatory of the rue Serpente (defunct) 1890–1968 Paris, France
Oil Region Astronomical Observatory Venango County, Pennsylvania, US
Onan Observatory 1990 Norwood Young America, Minnesota, US
Ondokuz Mayıs University Observatory 2006 Samsun, Turkey
Ondřejov Observatory 1898 Ondřejov, Czech Republic
Onsala Space Observatory 1949 Onsala, Sweden
Ooty Radio Telescope 1970 Ooty, Tamil Nadu, India
Orchard Hill Observatory 1965 Amherst, Massachusetts, US
Orioloromano Observatory 2007 Oriolo Romano, Italy
Orion 1 (defunct) 1971 Low Earth orbit
Orion 2 (defunct) 1973 Low Earth orbit
Orion Ranch Observatory 2009 Bertram, Texas, US
Orwell Park School Observatory 1848 Nacton, UK
Ostrowik Observatory 1952 Ostrowik, Poland
Otter Creek Observatory 1995 Meade County, Kentucky, US
Oulu Cosmic-Ray Station Oulu, Finland
Owens Valley Radio Observatory 1958 Bishop, California, US
Pachmarhi Array of Cerenkov Telescopes (PACT) 1986 Pachmarhi, Madhya Pradesh, India
Palisades-Dows Observatory 1987 Cedar Rapids, Iowa, US
PAGASA Astronomical Observatory 1954 Quezon City, Philippines
Palermo Observatory 1790 Palermo, Sicily, Italy
Palomar Observatory 1948 Palomar Mountain, California, US
Panzano Observatory 1640 Bologna, Italy
Paranal Observatory 1999 Cerro Paranal, Atacama desert, Chile
Paris Observatory 1667 Paris, France
Parkes Observatory 1961 Parkes, Australia
Paul Robinson Observatory 1965 High Bridge, New Jersey, US
Peach Mountain Observatory 1950 Dexter, Michigan, US
Perkins Observatory 1931 Delaware, Ohio, US
Perth Observatory 1896 Perth, Australia
Peterberg Observatory 1977 Saarland, Germany
Pic du Midi Observatory 1878 Pic du Midi, Pyrenees, France
Pico dos Dias Observatory 1981 Minas Gerais, Brazil
Piera Observatory 1968 Barcelona, Spain
Pierre Auger Observatory 2004 Malargüe, Argentina
Pine Bluff Observatory 1958 Cross Plains, Wisconsin, US
Pine Mountain Observatory 1965 Bend, Oregon, US
Pistoia Mountains Astronomical Observatory 1990 Pian dei Termini (near San Marcello Pistoiese), Italy
Piwnice Ovservatory 1945 Piwnice near Toruń, Poland
Planetarium and Astronomical Observatory in Grudziądz 1972 Grudziądz, Kujawsko-Pomorskie, Poland
Pollock Astronomical Observatory 2004 Hunting Valley, Ohio, US
Portage Lake Observatory (defunct) 1948 Dexter, Michigan, US
Poznań Observatory 1919 Poznań, Poland
Prishtina Observatory 1997 Pristina Municipality, Kosovo
Puckett Observatory 1977 Ellijay, Georgia, US
Pula Observatory 1869 Pula, Croatia
Pulkovo Observatory 1839 Pulkovskiye Heights, Russia
Purple Mountain Observatory 1929 Nanjing, Jiangsu Province, China
Queqiao 2018 Earth-Moon L2
Queqiao-2 2024 Lunar orbit
Quito Astronomical Observatory 1873 La Alameda Park, Quito, Ecuador
Radcliffe Observatory 1772 Oxford, England. Moved to Durban, South Africa in 1939
Rainwater Observatory French Camp, Mississippi, US
Ralph A. Worley Observatory 1964 Shreveport, Louisiana, US
Rankin Science Observatory 1963 Appalachian State University, Boone, North Carolina, US
Rancho Mirage Library and Observatory 2018 Rancho Mirage, California, US
Rattlesnake Mountain Observatory (defunct) 1971 Hanford Reach National Monument, Washington, US
Real Instituto y Observatorio de la Armada (Spain) 1793 San Fernando, Cádiz, Spain
Red Barn Observatory 2006 Ty Ty, Georgia, US
Red Buttes Observatory 1994 Laramie, Wyoming, US
Riley Observatory 1974 Naperville, Illinois, US
RIT Observatory Rochester, New York, US
Ritter Observatory Toledo, Ohio, US
Robert A. Schommer Observatory Rutgers University, New Brunswick, New Jersey, US
Robert Brownlee Observatory Lake Arrowhead, California, US
Robinson Observatory Orlando, Florida, US
Robotic Lunar Observatory (defunct) 1995 Flagstaff, Arizona, US
Roger Twitchell Observatory[3] 1972 Paris, Maine, US
Rogers Observatory 1981 Traverse City, Michigan, US
Rolnick Observatory Westport, Connecticut, US
Rome Observatory Italy
Roseland Observatory 1998 St Stephen-in-Brannel, UK
Rossall School Observatory Rossall, UK
Rothney Astrophysical Observatory 1984 Priddis, Alberta, Canada
Royal Observatory, Greenwich 1675 Greenwich, England, UK
Royal Observatory, Edinburgh 1896 Edinburgh, Scotland, UK
Roque de los Muchachos Observatory 1979 (officially inaugurated in 1985) La Palma, Canary Islands, Spain.
Rosemary Hill Observatory Bronson, Florida, US
Rozhen Observatory 1981 Peak Rozhen, Bulgaria.
Rutherford Observatory 1920s New York City, New York, US
San Fernando Observatory (SFO) 1976 Sylmar, California, US
Sankt Andreasberg Observatory 2014 Sankt Andreasberg, Germany
Sayan Spectrographic Cosmic Ray Complex Irkutsk, Russia
SFA Observatory 1976 Nacogdoches, Texas, US
Sagamore Hill Radio Observatory 1963 Hamilton, Massachusetts, US
Shattuck Observatory 1854 Hanover, New Hampshire, US
Sherwood Observatory 1972 Mansfield, UK
Seven Hills Observatory 1996 Kearney, Nebraska, US
Shamakhi Astrophysical Observatory 1958 Shamakhi, Azerbaijan
Shanghai Astronomical Observatory 1962 Shanghai, China
Sherzer Observatory 1878 Ypsilanti, Michigan, US
Sheshan Astronomical Observatory 1900 Shanghai, China
Siding Spring Observatory 1924 Siding Spring, New South Wales, Australia
Sidmouth Observatory 1912 Sidmouth, Devon, England, UK
Sierra Nevada Observatory 1981 Sierra Nevada, Spain
Silesian Planetarium and Astronomical Observatory 1955 Chorzów / Katowice, Silesia, Poland
Simeiz Observatory 1906 Simeiz, Crimea, Ukraine
Skalnaté Pleso Observatory 1953 Vysoké Tatry, Slovakia
Skinakas Observatory 1984 Crete, Greece
Skylab 1973 low Earth orbit; re-entered in 1979
Smith Observatory 1880s Beloit, Wisconsin, US
Smithsonian Astrophysical Observatory 1890 Cambridge, Massachusetts, US
Sobaeksan Optical Astronomy Observatory 1978 Sobaeksan, South Korea
Sola Fide Observatory 1990s Austin, Minnesota, US
Solar and Heliospheric Observatory (SOHO) 1996 Earth–Sun L1 point
Solar Space Telescope 2009 709 km SSO; life: 3 years
Sommers–Bausch Observatory 1949 Boulder, Colorado, US
Sonnenborgh Observatory 1853 Utrecht, Netherlands
Sonoma State Observatory 1976 Rohnert Park, California, US
South African Astronomical Observatory
  • Cape Town
  • Sutherland
  • 1820
  • 1972
 Observatory, Cape Town, South Africa
Southern Astrophysical Research Telescope (SOAR) 2004 Cerro Pachón, Chile
South Pole Telescope 2007 Antarctica
Spanish National Observatory 1790 (Spain)
Special Astrophysical Observatory of the Russian Academy of Sciences 1966 Zelenchukskaya, near Arkhyz, Caucasus Mountains, Russia
Sperry Observatory 1967 Cranford, New Jersey, US
Spitzer Space Telescope 2003 Heliocentric orbit
Springfield Observatory 1968 Springfield, Massachusetts, US
Sproul Observatory 1911 Swarthmore, Pennsylvania, US
Stardome Observatory 1967 Auckland, North Island, New Zealand
Starkenburg Observatory 1970 Heppenheim, Germany
Štefánik's Observatory 1928 Prague, Czech Republic
Stellafane Observatory 1920 Springfield, Vermont, US
Stellar Vista Observatory 2019 Kanab, Utah, US
Stephens Memorial Observatory 1901 Hiram, Ohio, US
Steward Observatory
1916 Tucson, Arizona, US
Stickney Observatory[4] 1950s Bennington, Vermont, US
Stjerneborg 1581 Hven, Sweden
Stockholm Observatory 1749 Stockholm, Sweden
Stokesville Observatory 1970s Virginia, US
Stone Observatory 1853 Stone, Buckinghamshire, UK
Stonyhurst Observatory 1838 Lancashire, England
Strasbourg Observatory 1881 Strasbourg, France
Stratospheric Observatory for Infrared Astronomy 2006 14 km in the stratosphere
Stull Observatory 1966 Alfred, New York, US
Stuttgart Observatory 1920 Stuttgart, Germany
Submillimeter Array 1987 Mauna Kea, Hawaii, US
St. Thomas Observatory 2009 Saint Paul, Minnesota, US
Space Variable Objects Monitor 2004 Low Earth orbit
Sudbury Neutrino Observatory 1999 Sudbury, Ontario, Canada
Sunriver Observatory 1990 Sunriver, Oregon, US
Swift Gamma-Ray Burst Mission 2004 Low Earth orbit
Swiss Observatory Polychron and Astronomy 2019 Geneva, Switzerland
Sydney Observatory 1858 Sydney, Australia
Table Mountain Observatory Angeles National Forest, Wrightwood, California, US
Tacubaya Observatory 1882 Tacubaya, Mexico City, Mexico
Taeduk Radio Astronomy Observatory 1986 Taejon, South Korea
Tamke-Allan Observatory 1998 Roane County, Tennessee, US
Tartu Observatory 1964 Tartumaa, Estonia
Teide Observatory 1964 Tenerife, Canary Islands, Spain
Ten Acre Observatory Tribbey, Oklahoma, US
Terskol Peak Observatory 1989 Terskol, Kabardino-Balkaria, Russia
Thai National Observatory 2013 Doi Inthanon, Chiang Mai, Thailand
The Dam Observatory 2017 Lake Tschida, North Dakota, US
The Heights Observatory 1989 The Heights School, South Australia, Australia
Texas A&M Astronomical Observatory College Station, Texas, US
Theodore Jacobsen Observatory 1895 Seattle, Washington, US
Thompson Observatory 1968 Beloit, Wisconsin, US
Tien Shan Astronomical Observatory Almaty, Kazakhstan
Tuorla Observatory 1952 Piikkiö, Finland
Trieste Observatory Trieste, Italy
Troodos Observatory 2023 Agridia, Troodos Mountains, Cyprus
Trottier Observatory 2015 Simon Fraser University, Burnaby, Canada
Turin Observatory 1759 Pino Torinese, Italy
Udaipur Solar Observatory Udaipur, Rajasthan, India
Ukrainian T-shaped Radio telescope, second modification 1972 Shevchenkove, Ukraine
Ulugh Beg Observatory 1420s Samarkand, Uzbekistan
University of Alabama Observatory 1950 Tuscaloosa, Alabama, US
University of Alabama Observatory (Old) 1849–1890s Tuscaloosa, Alabama, US
University of North Alabama Observatory Florence, Alabama, US
University of Illinois Astronomical Observatory 1896 Urbana, Illinois, US
University of London Observatory 1929 London, England, UK
University of Maryland Observatory College Park, Maryland, US
University of Michigan-Dearborn Observatory 2007 Dearborn, Michigan, US
University of New Hampshire Observatory 1985 Durham, New Hampshire, US
University of Oklahoma Observatory Norman, Oklahoma, US
University of Puerto Rico at Humacao Observatory[5] 1985 Humacao, Puerto Rico, US
University of Valencia Astronomical Observatory 1909 Valencia, Spain
Uppsala Astronomical Observatory 1741 Uppsala, Sweden
Urania (Antwerp) Hove, Belgium
Urania (Berlin) Berlin, Germany
Urania (Vienna) 1909 Vienna, Austria
Urania Observatory (Zürich) 1907 Zürich, Switzerland
Uraniborg 1572–1597 (demolished) Hven, Sweden
Urumqi Astronomical Observatory 1957 Urumqi, Xinjiang, China
U.S. Naval Observatory (USNO)[6] 1844
  • 1830–1844
  • 1955
 Washington, D.C., US
Valongo Observatory 1881 Rio de Janeiro, Brazil
Vainu Bappu Observatory 1968 Kavalur, Tamil Nadu, India
Astronomical observatory of Aosta Valley 2003 Nus, Aosta Valley, Italy
Van Vleck Observatory 1914 Middletown, Connecticut, US
Vanderbilt University Observatory Nashville, Tennessee, US
Vartiovuori Observatory (defunct) 1819–1834 Turku, Finland
Vassar College Observatory (defunct) 1865 Poughkeepsie, New York, US
Vatican Observatory
1891
  • 1993
 Headquarters: Castel Gandolfo, Italy
Veen Observatory 1970 Lowell, Michigan, US
Vega–Bray Observatory 1990 Benson, Arizona, US
Ventspils Starptautiskais Radioastronomijas Centrs Irbene, Latvia
Vernonia Peak Observatory Vernonia, Oregon, US
Very Large Array 1980 Socorro, New Mexico, US
Very Long Baseline Array 1993 Various locations
Vienna Observatory 1753 Vienna, Austria
Vilnius University Observatory 1753 Vilnius University, Lithuania
Višnjan Observatory 1978 Višnjan, Croatia
Vsetín Observatory 1950 Vsetín, Czech Republic
Warkworth Radio Observatory 2008 Warkworth, New Zealand
Warner Observatory (defunct) 1882 Rochester, New York, US
Warner and Swasey Observatory 1919 Cleveland, Ohio, US
Warren Rupp Observatory 1985 Mansfield, Ohio, US
University of Warsaw Observatory 1825 Warsaw, Poland
Washburn Observatory 1881 Madison, Wisconsin, US
Wast Hills Observatory 1982 Birmingham, England, UK
Weaver Student Observatory 1998 Monterey, California, US
Weitkamp Observatory 1955 Westerville, Ohio, US
West Mountain Observatory 1981 West Mountain, Utah, US
Whakatane Astronomical Society 1964 Whakatāne, New Zealand
Whitin Observatory 1901 Wellesley, Massachusetts, US
Widener University Observatory 2004 Chester, Pennsylvania, US
Wilder Observatory 1903 Amherst, Massachusetts, US
Willard L. Eccles Observatory 2009 Frisco Peak, Utah, US
William Brydone Jack Observatory 1851 Fredericton, New Brunswick, Canada
Williams Observatory 1990 Boiling Springs, North Carolina, US
Winer Observatory 1983 Sonoita, Arizona, US
Winfree Observatory 1900 Lynchburg, Virginia, US
Wise Observatory 1971 Negev, Israel
Witte Observatory 1984 Mediapolis, Iowa, US
WIYN Observatory 1994 Kitt Peak, Arizona, US
Wyoming Infrared Observatory 1975 Laramie, Wyoming, US
Xiangfen Astronomical Observatory 2100 BCE Xiangfen County, Linfen, Shanxi Province, China
Xinglong Station (NAOC) Xinglong County, Chengde, Hebei province, China[7]
Xinjiang Astronomical Observatory 1968 Urumqi, Xinjiang, China
XMM-Newton 1999 Highly eccentric Earth orbit
XRISM 2023 Earth orbit
XPoSat 2024 Earth orbit
Xujiahui Astronomical Observatory 1872 Shanghai, China
Arctic Space Weather Center Yakutsk, Russia
Yale Student Observatory New Haven, Connecticut, US
Yangbajing International Cosmic-Ray Observatory Yangbajing Valley, Tibet, China
Yantra Mandir 1724 New Delhi, Delhi, India
Yerevan Cosmic-Ray Station Yerevan, Armenia
Yerkes Observatory 1897 Williams Bay, Wisconsin, US
York University Observatory Toronto, Ontario, Canada
Yuba City Astronomical Observatory 2010 Yuba City, California, US
Yunnan Astronomical Observatory 1957 Kunming, Yunnan, China
Zimmerwald Observatory 1956 Zimmerwald, Switzerland
Zadko Observatory 2009 Gingin, Australia

See also

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References

[edit]
  1. ^ Chaisson, Eric; McMillan, Steve (2002). Astronomy Today, Fourth Edition. Prentice Hall.
  2. ^ "History of the Landolt Astronomical Observatory". Louisiana State University Department of Physics & Astronomy. September 1, 2022. Retrieved September 1, 2022.
  3. ^ "Twitchell Observatory | MSAD 17". MSAD17.org. Maine Department of Education. Retrieved December 30, 2022.
  4. ^ "Stickney Observatory at Bennington College". Stickney Observatory at Bennington College.
  5. ^ Muller, R.J. (Summer 1994). "The Humacao University Observatory". International Amateur-Professional Photoelectric Photometry Communication. 56 (43): 43. Bibcode:1994IAPPP..56...43M.
  6. ^ "Records of the U.S. Naval Observatory". National Archives. 2016-08-15. Retrieved 2021-04-14.
  7. ^ "Xinglong Observing Station". 2021-03-21. Archived from the original on 2023-01-23.
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