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  2. List of astronomical observatories - Wikipedia

    en.wikipedia.org/wiki/List_of_astronomical...

    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 ...

  3. List of highest astronomical observatories - Wikipedia

    en.wikipedia.org/wiki/List_of_highest...

    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 ...

  4. List of space telescopes - Wikipedia

    en.wikipedia.org/wiki/List_of_space_telescopes

    This list of space telescopes (astronomical space observatories) is grouped by major frequency ranges: gamma ray, x-ray, ultraviolet, visible, infrared, microwave, and radio. Telescopes that work in multiple frequency bands are included in all of the appropriate sections.

  5. List of archaeoastronomical sites by country - Wikipedia

    en.wikipedia.org/wiki/List_of_archaeo...

    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 ...

  6. Timeline of telescopes, observatories, and observing technology

    en.wikipedia.org/wiki/Timeline_of_telescopes...

    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.

  7. List of the largest optical telescopes in North America

    en.wikipedia.org/wiki/List_of_the_largest...

    Name/Observatory Aperture cm (in) Type Location then (Original Site) Extant* Harvard Great Refractor, Harvard College Observatory [15] 38 cm (15") achromat: Cambridge, Massachusetts, USA: 1847 Merz und Mahler (Mitchell cupola), Cincinnati Observatory: 28 cm (11") achromat: Cincinnati, Ohio, USA: 1843 West Point Observatory 9.75 inch Fitz equatorial

  8. Observatory - Wikipedia

    en.wikipedia.org/wiki/Observatory

    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 an astronomical sextant (for measuring the distance between stars) or Stonehenge (which has some alignments on astronomical phenomena).

  9. List of largest optical reflecting telescopes - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_optical...

    Haleakala Observatory, Hawaii, USA: 2019 Anglo-Australian Telescope (AAT) 3.89 m (153 in) Single: Australia, UK: Australian Astronomical Obs., New South Wales, Australia: 1974 United Kingdom Infrared Telescope (UKIRT) 3.8 m (150 in) Single: UK, United States: Mauna Kea Observatories, Hawaii, USA: 1979 3.67 m AEOS Telescope (AEOS) 3.67 m (144 in ...