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Timeline of telescopes, observatories, and observing technology

   * 1800 BC - Babylonian star catalog
   * 1700 BC - Stonehenge
   * 432 BC - Athens observatory on Lycabettus Hill used by Meton and
     Phaeinus
   * 350s BC - Eudoxus of Cnidos observatory, school at Cyzicus
   * 350 BC - Shin Shen's star catalog has almost 800 entries
   * 330 BC - Aristotle _On the Heavens_ [De Caelo]
   * 200 BC - Astrolabe used by Greeks
   * 150 BC - Rhodes observatory
   * 129 BC - Hipparchus' star catalog
   * 105 BC - Alexandria observatory and College of Technology under Heron
   * 52 BC - Shou-chang uses armillary ring
   * 141 - Claudius Ptolemy _Megale Mathematike Syntaxis_ [or Almagest]
   * 499 - Aryabhata _Aryabhatiya_
   * 646 - Chomsongdae observatory near Kyongju, South Korea
   * 790 - Gundishapur observations by al-Nihawandi
   * 813 - Baghdad School of Astronomy
   * 828 - al-Shammasiyya observatory of Abi Mansur near Baghdad
   * 831-2 - Mount Qasiyun observatory near Damascus
   * 840 - al-Farghani _Compendium of the Science of the Stars_
   * 887 - Raqqa observatory of al-Battani in Syria
   * 963 - al-Sufi's star catalog _Book of the Fixed Stars_
   * 988 - Baghdad observatory of al-Quhi and al-Buzjani
   * ca. 900 - Hanlin Academy observatory in Northern China
   * 994 - Ray observatory of al-Khujandi near Tehran, Iran
   * 1000 - Mokattam observatory, Egypt for al-Hakim II
   * 1023 - Hamadan observatory
   * ca. 1030 - _Treasury of Optics_ by Ibn al-Haytham of Egypt [Alhazen]
   * 1074-92 - Malikshah observatory at Isfahan used by al-Khayyam
   * 1119-25 - Cairo al-Bataihi observatory for al-Afdal
   * 1252-72 - Alphonsine tables recorded
   * 1259 - Maragha Observatory and library of Nasir al-Din al-Tusi by Mangu
     under Khan Hulagu
   * ca. 1270 - Terrace for Managing Heaven 26 observatory network of Guo
     Shoujing under Khubilai Khan
   * 1417 - _Speculum Planetarum_ by Simones de Selandia
   * 1420 - Samarkand observatory of Ulugh Beg
   * 1467-71 - Observatory at Oradea Hungary for King Corvinus
   * 1472 - Nuremberg observatory
   * 1560 - Kassel observatory under Hessian Landgrave Wilhelm IV
   * 1575-80 - Istanbul observatory of al-Din under Murad III
   * 1580 - Royal Danish Astronomical Observatory at Hveen (Uraniborg) for
     Tycho Brahe
   * 1600 - Prague observatory
   * 1603 - Johann Bayer's _Uranometria_

   * 1608 - Hans Lippershey tries to patent an optical refracting telescope
   * 1609 - Galileo Galilei builds his first optical refracting telescope
   * 1632 - Leiden University observatory
   * 1641 - William Gascoigne invents telescope cross hairs
   * 1661 - James Gregory proposes an optical reflecting telescope
   * 1667 - Paris observatoire
   * 1668 - Isaac Newton constructs the first optical reflecting telescope
   * 1675 - Royal Greenwich Observatory of England
   * 1705 - Berlin observatory
   * 1725 - St. Petersburg observatory at Royal Academy
   * 1733 - Chester Moor Hall invents the achromatic lens refracting
     telescope
   * 1740 - Indian observatories of Jai Singh at Dehli, Jaipur, Madras
   * 1758 - John Dolland reinvents the achromatic lens
   * 1789 - William Herschel finishes a 49-inch optical reflecting
     telescope---located in Slough, England
   * 1761 - Joseph-Nicolas Delisle 62 observing station network for
     observing transit of Venus (& Mercury)
   * 1769 - Short reflectors used at 63 station network for transit of Venus
   * 1840 - J.W. Draper invents astronomical photography and photographs the
     Moon
   * 1845 - Lord Rosse finishes the Birr Castle 72-inch optical reflecting
     telescope---located in Parsonstown, Ireland
   * 1871 - German Astronomical Association organized network of 13 (later
     16) observatories for stellar proper motion studies
   * 1872 - Henry Draper invents astronomical spectral photography and
     photographs the spectrum of Vega
   * 1887 - Paris conference institutes Carte du Ciel project to map entire
     sky to 14th magnitude photographically
   * 1889 - Astronomical Society of the Pacific founded
   * 1890 - Albert Michelson proposes the stellar interferometer
   * 1892 - George Hale finishes a spectroheliograph---allows the Sun to be
     photographed in the light of one element only
   * 1897 - Alvan Clark finishes the Yerkes 40-inch optical refracting
     telescope---located in Williams Bay, Wisconsin
   * 1917 - Mount Wilson 100-inch optical reflecting telescope begins
     operation---located in Mount Wilson, California
   * 1919 - International Astronomical Union (IAU) founded
   * 1930 - Bernard-Ferdinand Lyot invents the coronagraph
   * 1930 - Karl Jansky builds a 30-meter long rotating aerial radio
     telescope
   * 1933 - Bernard-Ferdinand Lyot invents the Lyot filter
   * 1934 - Bernhard Schmidt finishes the first 14-inch Schmidt optical
     reflecting telescope
   * 1936 - Palomar 18-inch Schmidt optical reflecting telescope begins
     operation---located in Palomar, California
   * 1937 - Grote Reber builds a 31-foot radio telescope
   * 1947 - Bernard Lovell and his group complete the Jodrell Bank 218-foot
     non-steerable radio telescope
   * 1949 - Palomar 48-inch Schmidt optical reflecting telescope begins
     operation---located in Palomar, California
   * 1949 - Palomar 200-inch optical reflecting telescope begins regular
     operation---located in Palomar, California
   * 1957 - Bernard Lovell and his group complete the Jodrell Bank 250-foot
     steerable radio telescope
   * 1957 - Peter Scheuer publishes his PhD method for obtaining source
     counts of spatially unresolved sources
   * 1960 - Martin Ryle tests Earth rotation aperature synthesis
   * 1960 - Owens Valley 27-meter radio telescopes begin operation---located
     in Big Pine, California
   * 1962 - European Southern Observatory (ESO) founded
   * 1963 - Arecibo 300-meter radio telescope begins operation---located in
     Arecibo, Puerto Rico
   * 1964 - Ryle 1-mile radio interferometer begins operation---located in
     Cambridge, England
   * 1965 - Owens Valley 40-meter radio telescope begins operation---located
     in Big Pine, California
   * 1967 - First VLBI images---183 km baseline
   * 1969 - Observations start at Big Bear Solar Observatory---located in
     Big Bear, California
   * 1970 - Cerro Tololo 158-inch optical reflecting telescope begins
     operation---located in Cerro Tololo, Chile
   * 1970 - Kitt Peak National Observatory 158-inch optical reflecting
     telescope begins operation---located near Tucson, Arizona
   * 1974 - Anglo-Australian 153-inch optical reflecting telescope begins
     operation---located in Siding Springs, Australia
   * 1975 - Gerald Smith, Frederick Landauer, and James Janesick use a CCD
     to observe Uranus---first astronomical CCD observation
   * 1978 - Multiple Mirror 176-inch equivalent optical/infrared reflecting
     telescope begins operation---located in Amado, Arizona
   * 1979 - UKIRT 150-inch infrared reflecting telescope begins
     operation---located at Mauna Kea, Hawaii
   * 1979 - Canada-France-Hawaii 140-inch optical reflecting telescope
     begins operation---located at Mauna Kea, Hawaii
   * 1980 - Completion of construction of the VLA---located in Socorro, New
     Mexico
   * 1993 - Keck 10-meter optical/infrared reflecting telescope begins
     operation---located at Mauna Kea, Hawaii
   * 1997 - The Japanese Halca satellite begins operations, producing first
     VLBI observations from space. --- 25000 km maximum baseline
   * 1998 - First light at VLT1, the 8.2 m ESO telescope.
   * 2001 - First light at VLTI. Operations in the interferometry mode of
     VLT start at ESO --- 103 m baseline
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