Here you can find information on the observatories’ status

Gravitational Waves

• LIGO (Laser Interferometer Gravitational-Wave Observatory) is a large-scale observatory to detect cosmic gravitational waves and to develop gravitational-wave observations as an astronomical tool. It is comprised of two interferometers located in Hanford Site, Washington and Livingston, Louisiana, US.
• Virgo is a large interferometer designed to detect cosmic gravitational waves and to develop gravitational-wave observations as an astronomical tool, located in Cascina, Pisa.
• KAGRA (KAmioka GRAvitational wave detector) is an underground gravitational wave detector located in Gifu Prefecture, Japan.
• GEO600 is a gravitational wave detector located near Sarstedt South of Hanover, Germany
• ET (Einstein Telescope) is a proposed third-generation ground-based gravitational wave detector being developed by European scientific institutions. 
• CE (Cosmic Explorer) is a proposed third-generation ground-based gravitational wave detector being developed in the USA. 
• LISA (Laser Interferometer Space Antenna) is a proposed space-based gravitational wave detector being developed by the European Space Agency

Radio

• VLA (Karl G. Jansky Very Large Array) is a centimeter-wavelength radio astronomy observatory located in central New Mexico on the Plains of San Agustin, comprised by twenty-eight 25-meter radio telescopes
• ALMA (The Atacama Large Millimeter/submillimeter Array) is an astronomical interferometer of 66 radio telescopes in the Atacama Desert of northern Chile, which observe electromagnetic radiation at millimeter and submillimeter wavelengths
• LOFAR (Low-Frequency Array) is a large radio telescope network located mainly in the Netherlands and composed of about 20,000 small antennas concentrated in 52 stations
• IRAM develops and maintains two observatories: the 30-meter telescope located on the Pico Veleta near Granada, Spain, and the NOEMA interferometer (currently an array of eleven 15-meter telescopes) in the French Alps.
• ATCA (Australia Telescope Compact Array) is a radio telescope located near the town of Narrabri in New South Wales, Australia.
• ASKAP (Australian Square Kilometre Array Pathfinder) is a radio telescope situated in the Murchison region of Western Australia
• MeerKAT is a radio telescope consisting of 64 antennas in the Northern Cape of South Africa
• SKA (Square Kilometre Array) is an intergovernmental radio telescope project being built in Australia and South Africa. When completed it will have a total collecting area of approximately one square kilometre

Infrared(IR)/Optical

• VLT (Very Large Telescope) is a telescope facility, consisting of four individual telescopes, operated by the European Southern Observatory on Cerro Paranal in the Atacama Desert of northern Chile
• ZTF (Zwicky Transient Facility) is a wide-field sky astronomical survey using a new camera attached to the Samuel Oschin Telescope at the Palomar Observatory in California, US
• W. M. Keck Observatory is a two-telescope optical and infrared observatory near the summit of Mauna Kea in the U.S. state of Hawaii
• Subaru Telescope is the flagship telescope of the National Astronomical Observatory of Japan, located at the Mauna Kea Observatory in the U.S. state of Hawaii
• Gemini Observatory is an astronomical observatory consisting of two telescopes, Gemini North and Gemini South, which are located at two separate sites in Hawaii and Chile, respectively.
• TMT (Thirty Meter Telescope) is a proposed extremely large telescope (ELT) planned to be built on Mauna Kea (Hawaii, USA)
• GMT (Giant Magellan Telescope) is a proposed to be constructed in Chile.
• HST (Hubble Space Telescope) is a space telescope that was launched into low Earth orbit in 1990 and has been in operation since 1993
• E-ELT (Extremely Large Telescope) is an astronomical observatory currently under construction by the European Southern Observatory (ESO) on top of Cerro Armazones in northern Chile. It will be the largest optical/near-infrared extremely large telescope.
• Vera C. Rubin Observatory, previously referred to as the Large Synoptic Survey Telescope (LSST) , is an astronomical observatory currently under construction in Chile. Its main task will be an astronomical survey, the Legacy Survey of Space and Time
• Euclid is a visible to near-infrared space telescope currently under development by the European Space Agency (ESA) and the Euclid Consortium. The objective of the Euclid mission is to better understand dark energy and dark matter by accurately measuring the acceleration of the universe
• JWST (James Webb Space Telescope) is a joint NASA-ESA-CSA space telescope under construction that is planned to succeed the Hubble Space Telescope.
• Nancy Grace Roman Space Telescope ( formerly the Wide-Field Infrared Survey Telescope or WFIRST) is a NASA infrared space telescope currently under development.

Ultraviolet (UV)

• ULTRASAT (Ultraviolet Transient Astronomy Satellite) is an astronomical small satellite under construction that will detect and monitor transient astronomical events in the near-ultraviolet spectral region.
• LUVOIR (Large Ultraviolet Optical Infrared Surveyor) is a multi-wavelength space telescope concept being developed by NASA

X-Rays

• Chandra is a Flagship-class X-Ray space telescope that has been operational since 1999
• XMM (X-ray Multi-Mirror Mission) is an X-ray space observatory that has been operational since 1999
• e-Rosita is an X-ray instrument part of the Russian–German Spektr-RG space observatory
• NuSTAR is a space-based X-ray telescope that focuses high energy X-rays from astrophysical sources for nuclear spectroscopy
• HXMT (Hard X-ray Modulation Telescope) is a space observatory, launched in 2017 to observe X-ray and gamma-ray emissions from black holes, neutron stars, active galactic nuclei and other phenomena.
• ATHENA (Advanced Telescope for High-ENergy Astrophysics) is an X-ray observatory mission proposed by ESA

Low Energy Gamma-Rays

• INTEGRAL (INTErnational Gamma-Ray Astrophysics Laboratory) is a space telescope for observing gamma rays of energies up to 8 MeV
• AGILE (Astro‐Rivelatore Gamma a Immagini Leggero) is an X-ray and Gamma ray astronomical satellite of the Italian Space Agency.
• Fermi (Fermi Gamma-ray Space Telescope) is a space observatory being used to perform gamma-ray astronomy observations from low Earth orbit.
• SWIFT (Neil Gehrels Swift Observatory) is a NASA space observatory designed to detect gamma-ray bursts.
• GECAM (Gravitational Wave High-energy Electromagnetic Counterpart All-sky Monitor) is a space observatory composed of a constellation of two X-ray and gamma-ray all-sky observing small satellites
• SVOM (Space Variable Objects Monitor) is a planned small X-ray telescope satellite under development by China National Space Administration and the French Space Agency
• AMEGO (All-sky Medium Energy Gamma-ray Observatory) is an astrophysics probe mission concept designed to explore the MeV sky.

High Energy Gamma-Rays

• MAGIC (Major Atmospheric Gamma Imaging Cherenkov Telescopes, later renamed to MAGIC Florian Goebel Telescopes) is a system of two Imaging Atmospheric Cherenkov telescopes situated at the Roque de los Muchachos Observatory on La Palma, it detects particle showers released by gamma rays using the Cherenkov radiation
• HESS (High Energy Stereoscopic System) is a system of Imaging Atmospheric Cherenkov Telescopes, located in Namibia, for the investigation of cosmic gamma rays in the photon energy range of 0.03 to 100 TeV
• VERITAS (Very Energetic Radiation Imaging Telescope Array System) is a ground-based gamma-ray instrument operating at the Fred Lawrence Whipple Observatory (FLWO) in southern Arizona, USA.
• HAWC (High Altitude Water Cherenkov Observatory) is a gamma-ray and cosmic ray observatory located on the flanks of the Sierra Negra volcano in Mexico
• CTA (Cherenkov Telescope Array) is a multinational, worldwide project to build a new generation of ground-based gamma-ray instrument in the energy range extending from some tens of GeV to about 300 TeV

Low Energy Neutrinos

• Juno (Jiangmen Underground Neutrino Observatory) is a medium baseline reactor neutrino experiment under construction at Kaiping, Jiangmen in Southern China.
• SuperK (Super-Kamioka Neutrino Detection Experiment) is a neutrino observatory located under Mount Ikeno near the city of Hida, Gifu Prefecture, Japan
• HyperK (Hyper-Kamiokande) is a neutrino observatory being constructed on the site of the Kamioka Observatory, near Kamioka, Japan.
• DUNE (Deep Underground Neutrino Experiment) is a neutrino experiment under construction that will observe neutrinos produced at Fermilab

High Energy Neutrinos

• IceCube (IceCube Neutrino Observatory) is a neutrino observatory constructed at the Amundsen–Scott South Pole Station in Antarctica. Its thousands of sensors are located under the Antarctic ice, distributed over a cubic kilometre.
• KM3Net (Cubic Kilometre Neutrino Telescope) is a future European research infrastructure that will be located at the bottom of the Mediterranean Sea. It will host the next-generation neutrino telescope in the form of a water Cherenkov detector with an instrumented volume of several cubic kilometres distributed over three locations in the Mediterranean.
• BDUNT(Baikal Deep Underwater Neutrino Telescope) is a neutrino detector conducting research below the surface of Lake Baikal (Russia) since 2003. It was upgraded in 2005 and again starting in 2015 to build the Baikal Gigaton Volume Detector (Baikal-GVD)

Ultra-high-energy cosmic rays

• Auger (Pierre Auger Observatory) is an international cosmic ray observatory in Argentina designed to detect ultra-high-energy cosmic rays
• TA (Telescope Array project) is an experiment designed to observe air showers induced by ultra-high-energy cosmic ray using a combination of ground array and air-fluorescence techniques, it is located in the high desert in Millard County, Utah, United States
• LHAASO (Large High Altitude Air Shower Observatory) is a gamma-ray and cosmic-ray observatory in Daocheng (Sichuan, China), it is designed to observe air showers triggered by gamma rays and cosmic rays.

Future Large Observatories

• ET (Einstein Telescope) is a proposed third-generation ground-based gravitational wave detector, currently under study by some institutions in the European Union, it will be able to test Einstein’s general theory of relativity in strong field conditions and realize precision gravitational wave astronomy
• LISA (Laser Interferometer Space Antenna) is a proposed space probe to detect and accurately measure gravitational waves from astronomical sources, LISA would be the first dedicated space-based gravitational wave detector
• ATHENA (Advanced Telescope for High-ENergy Astrophysics) is an X-ray observatory mission proposed by ESA
• Vera C. Rubin Observatory, previously referred to as the Large Synoptic Survey Telescope (LSST) , is an astronomical observatory currently under construction in Chile. Its main task will be an astronomical survey, the Legacy Survey of Space and Time
• JWST (James Webb Space Telescope) is a joint NASA-ESA-CSA space telescope under construction that is planned to succeed the Hubble Space Telescope.
• Euclid is a visible to near-infrared space telescope currently under development by the European Space Agency (ESA) and the Euclid Consortium. The objective of the Euclid mission is to better understand dark energy and dark matter by accurately measuring the acceleration of the universe
• SKA (Square Kilometre Array) is an intergovernmental radio telescope project being built in Australia and South Africa. When completed it will have a total collecting area of approximately one square kilometre
• CTA (Cherenkov Telescope Array) is a multinational, worldwide project to build a new generation of ground-based gamma-ray instrument in the energy range extending from some tens of GeV to about 300 TeV
• KM3Net (Cubic Kilometre Neutrino Telescope) is a future European research infrastructure that will be located at the bottom of the Mediterranean Sea. It will host the next-generation neutrino telescope in the form of a water Cherenkov detector with an instrumented volume of several cubic kilometres distributed over three locations in the Mediterranean.
• THESEUS (Transient High-Energy Sky and Early Universe Surveyor) is a space telescope mission proposal by the European Space Agency that would study gamma-ray bursts and X-rays for investigating the early universe.
• E-ELT (Extremely Large Telescope) is an astronomical observatory currently under construction by the European Southern Observatory (ESO) on top of Cerro Armazones in northern Chile. It will be the largest optical/near-infrared extremely large telescope.
• TMT (Thirty Meter Telescope) is a proposed extremely large telescope (ELT) planned to be built on Mauna Kea (Hawaii, USA)