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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 ...
This is a list of the highest astronomical observatories in the world, considering only ground-based observatories and ordered by elevation above mean sea level. The main list includes only permanent observatories with facilities constructed at a fixed location, followed by a supplementary list for temporary observatories such as transportable ...
This is a list of sites where claims for the use of archaeoastronomy have been made, sorted by country.. The International Council on Monuments and Sites (ICOMOS) and the International Astronomical Union (IAU) jointly published a thematic study on heritage sites of astronomy and archaeoastronomy to be used as a guide to UNESCO in its evaluation of the cultural importance of archaeoastronomical ...
The oldest form of astronomy, optical or visible-light astronomy, observes wavelengths of light from approximately 400 to 700 nm. [149] Positioning an optical telescope in space eliminates the distortions and limitations that hamper that ground-based optical telescopes (see Astronomical seeing ), providing higher resolution images.
Astronomical observatories are mainly divided into four categories: space-based, airborne, ground-based, and underground-based.Historically, ground-based observatories were as simple as containing a mural instrument (for measuring the angle between stars) or Stonehenge (which has some alignments on astronomical phenomena).
Astronomical observatories in the United States (6 C, 4 P) Astronomical observatories in Uzbekistan (3 P) V. Astronomical observatories in Venezuela (2 P)
Four 22 m fully steerable radio telescopes. At the 1960s the centimeter and millimeter-wavelength RT-22s had a world record-breaking high angular resolution for individual radio telescopes. Operated by the Pushchino Radio Astronomy Observatory. DKR-1000 Pushchino, Russia DKR-1000 is the world largest telescope operating in the meter wavelength ...
1576 – Royal Danish Astronomical Observatory Uraniborg at Hven by Tycho Brahe; 1577–80 – Taqi al-Din invents a mechanical astronomical clock that measures time in seconds, one of the most important innovations in 16th-century practical astronomy, as previous clocks were not accurate enough to be used for astronomical purposes. [13]