What was the name of the radio telescope the surpassed the Dwingeloo Radio Observatory?
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Dwingeloo Radio Observatory The Dwingeloo Radio Observatory is a single-dish radio telescope near the village of Dwingeloo (] ) in the northeastern Netherlands. Construction started in 1954, and the telescope was completed in 1956. The radio telescope has a diameter of 25 m. At the time of completion it was the largest radio telescope in the world, but it was overtaken in 1957 by the 76-m Lovell Telescope.
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Lovell Telescope The Lovell Telescope is a radio telescope at Jodrell Bank Observatory, near Goostrey, Cheshire in the north-west of England. When construction was finished in 1957, the telescope was the largest steerable dish radio telescope in the world at 76.2 m (250 ft) in diameter;
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Chandra X-ray Observatory The Chandra X-ray Observatory (CXO), previously known as the Advanced X-ray Astrophysics Facility (AXAF), is a Flagship-class space observatory launched on STS-93 by NASA on July 23, 1999. Chandra is sensitive to X-ray sources 100 times fainter than any previous X-ray telescope, enabled by the high angular resolution of its mirrors. Since the Earth's atmosphere absorbs the vast majority of X-rays, they are not detectable from Earth-based telescopes; therefore space-based telescopes are required to make these observations. Chandra is an Earth satellite in a 64-hour orbit, and its mission is ongoing as of 2017 .
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Fourth Cambridge Survey The Fourth Cambridge Survey (4C) is an astronomical catalogue of celestial radio sources as measured at 178 MHz using the 4C Array. It was published in two parts, in 1965 (for declinations +20 to +40) and 1967 (declinations -7 to + 20 and +40 to +80), by the Radio Astronomy Group of the University of Cambridge. References to entries in this catalogue use the prefix 4C followed by the declination in degrees, followed by a period, and then followed by the source number on that declination strip, e.g. 4C-06.23.
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Murchison Radio-astronomy Observatory The Murchison Radio-Astronomy Observatory (MRO) is a designated radio quiet zone located near Boolardy station in Western Australia.
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Green Bank Observatory The Green Bank Observatory is a private organization that took over running the Green Bank Telescope in October 2016.
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X-ray telescope An X-ray telescope (XRT) is a telescope that is designed to observe remote objects in the X-ray spectrum. In order to get above the Earth's atmosphere, which is opaque to X-rays, X-ray telescopes must be mounted on high altitude rockets, balloons or artificial satellites.
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Square Kilometre Array The Square Kilometre Array (SKA) is a large multi radio telescope project aimed to be built in Australia, New Zealand, and South Africa. If built, it would have a total collecting area of approximately one square kilometre. It would operate over a wide range of frequencies and its size will make it 50 times more sensitive than any other radio instrument. It would require very high performance central, computing engines and long-haul links with a capacity greater than the global Internet traffic as of 2013. It should be able to survey the sky more than ten thousand times faster than ever before.
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Ohio Sky Survey The Ohio Sky Survey was an astronomical survey of extragalactic radio sources. Data were taken between 1965 and 1971 using the Big Ear radio telescope at the Ohio State University Radio Observatory (OSURO), also known as the "Big Ear Radio Observatory (BERO)".
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Australia Telescope National Facility The Commonwealth Scientific and Industrial Research Organisation (CSIRO)'s radio astronomy observatories are collectively known as the Australia Telescope National Facility (ATNF), with the facility supporting Australia's research in radio astronomy.
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Ooty Radio Telescope The Ooty Radio Telescope is located in Muthorai near Ootacamund (Ooty), south India. It is part of the National Centre for Radio Astrophysics (NCRA) of the well known Tata Institute of Fundamental Research (TIFR) which is funded by the Government of India through the Department of atomic energy. The Ooty Radio Telescope (ORT) is a 530 m long and 30 m wide Cylindrical Paraboloid telescope. It operates at a frequency of 326.5 MHz with a maximum bandwidth of 15 MHz at the front-end.
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Radio Solar Telescope Network The Radio Solar Telescope Network (RSTN) is a network of solar observatories maintained and operated by the 557th Weather Wing, ACC. The RSTN consists of ground-based observatories in Australia, Italy, Massachusetts, New Mexico and Hawaii.
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Green Bank Interferometer The Green Bank Interferometer (GBI) is a former radio astronomy telescope located at Green Bank, West Virginia (USA) and operated by the National Radio Astronomy Observatory (NRAO). It included three on-site radio telescopes of 85-foot (26m) diameter, designated 85-1, 85-3, and 85-2 (85-1 is also known as the Tatel Telescope) and a portable telescope.
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Sphinx Observatory The Sphinx Observatory is an astronomical observatory located above the Jungfraujoch in Switzerland. It is named after the "Sphinx", a rocky summit on which it is located. At 3,571 m (11,716 ft) above mean sea level, it is one of the highest observatories in the world. Accessible to the public, it is also the second highest observation deck in Switzerland. The mountain top has been tunneled to fit an elevator which ascends to the observatory from the Jungfraujoch railway station, the highest such train station in Europe.
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ASTRON ASTRON is the Netherlands Institute for Radio Astronomy. Its main office is in Dwingeloo in the Dwingelderveld National Park in the province of Drenthe. ASTRON is part of Netherlands Organisation for Scientific Research (NWO).
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Visible-light astronomy Visible-light astronomy encompasses a wide variety of observations via telescopes that are sensitive in the range of visible light (optical telescopes). It includes "imaging", where a picture of some sort is made of the object; "photometry", where the amount of light coming from an object is measured, "spectroscopy", where the distribution of that light with respect to its wavelength is measured, and "polarimetry" where the polarisation state of that light is measured. An example of spectroscopy is the study of spectral lines to understand of what kind of matter light is going through. Visible astronomy also includes looking up at night (). Visible-light astronomy is part of optical astronomy, and differs from astronomies based on invisible types of light in the electromagnetic radiation spectrum, such as radio waves, infrared waves, ultraviolet waves, X-ray waves and gamma-ray waves.
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EROSITA eROSITA is an X-ray telescope built by the Max Planck Institute for Extraterrestrial Physics (MPE) in Germany for launch by Roscosmos of Russia, effectively replacing the ROSAT telescope when it reaches its orbit after launch in 2018 on board the Spectrum-Roentgen-Gamma (Spektr-RG / SRG), which also carries the Russian telescope "ART-XC".
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Giant Metrewave Radio Telescope The Giant Metrewave Radio Telescope (GMRT), located near Pune in India, is an array of thirty fully steerable parabolic radio telescopes of 45 metre diameter, observing at metre wavelengths. It is operated by the National Centre for Radio Astrophysics, a part of the Tata Institute of Fundamental Research, Mumbai. At the time it was built, it was the world's largest interferometric array offering a baseline of up to 25 km .
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Institut de radioastronomie millimétrique The Institut de radioastronomie millimétrique (IRAM) operates two radio astronomy telescopes at millimeter wavelengths, which are open to the international astronomical community: the 30 m single-dish radio telescope located on Pico Veleta (2850 m) in the Spanish Sierra Nevada (Andalucia, Spain), and the six-antenna Plateau de Bure Interferometer (2550 m) in the French Alps. Both sites are at high altitude to reduce the absorption by water vapor. The telescopes are supported by the IRAM offices and laboratories in Granada and Grenoble, respectively. IRAM, which is directed by Karl Schuster, has its headquarters in Grenoble.
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Nuclear Compton Telescope The Nuclear Compton Telescope (NCT) is a balloon-borne Compton telescope to observe the gamma-ray sky in the energy range from a few hundred keV to several MeV. Its main goals are to improve the understanding of Galactic nucleosynthesis, gamma-ray bursts, supernovae, black holes, and more.
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Uppsala Southern Schmidt Telescope The Uppsala Schmidt Telescope was moved to Siding Spring Observatory from Mount Stromlo Observatory in 1982. The instrument has been used to study our galaxy, asteroids and comets. It was last dedicated to the Siding Spring Survey. The telescope had a field of view of just over 6° through the use of a correcting plate, making its field three times as large as that of the Anglo-Australian Telescope. It used a spherical rather than a parabolic mirror with 0.6 m correcting plate to achieve this. Photographic plates and film were used as detectors.
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Xinglong Station (NAOC) Xinglong Station () is an observatory (IAU code 327) situated south of the main peak of the Yanshan mountains in Hebei province, China. Installed are seven telescopes: a Mark-III photoelectric astrolabe; a 60 cm reflector; an 85 cm reflector; a 60/90 cm Schmidt telescope; an 1.26-meter infrared telescope; and a 2.16-meter telescope. The most recent telescope is the 4m LAMOST. As of 2014 the observatory installed a 5.2-meter telescope as part of their Gamma-ray astronomy program, known colloquially as Sām Tām for its aggressive focal length. It is a popular tourist site.