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This is a list of large optical telescopes. For telescopes larger than 3 meters in aperture see List of largest optical reflecting telescopes . This list combines large or expensive reflecting telescopes from any era, as what constitutes famous reflector has changed over time.
The Precision Integrated-optics Near-infrared Imaging Experiment (PIONIER) is a visiting instrument at the ESO's Paranal Observatory, [1] part of the VLTI astronomical observatory. It combines the light from four telescopes simultaneously and provide 0.002 arc seconds of angular resolution , the equivalent angular resolution of a 100 m telescope.
This table does not include all the largest mirrors manufactured. The Steward Observatory Mirror Lab produced the 6.5 metre f/1.25 collimator used in the Large Optical Test and Integration Site of Lockheed Martin, used for vacuum optical testing of other telescopes. Segmented mirrors are also referred to as mosaic mirrors. Single mirrors are ...
The Large Binocular Telescope (LBT) is an optical telescope for astronomy located on 10,700-foot (3,300 m) Mount Graham, in the Pinaleno Mountains of southeastern Arizona, United States. It is a part of the Mount Graham International Observatory .
Comparison of nominal sizes of apertures of the Overwhelmingly Large Telescope and some notable optical telescopes. The Overwhelmingly Large Telescope (OWL) was a conceptual design by the European Southern Observatory (ESO) organisation for an extremely large telescope, which was intended to have a single aperture of 100 metres in diameter.
In 2013, the Adler Planetarium undertook the first major renovation of the Doane Observatory. Completed in 2015, renovations included the addition of an indoor classroom, a restroom, accessible entry ramps, and telescope and technology upgrades. [18] The Adler Planetarium is a member institution of the Large Synoptic Survey Telescope project. [29]
Inside a planetarium projection hall. (Belgrade Planetarium, Serbia) Inside the same hall during projection.(Belgrade Planetarium, Serbia)A planetarium (pl.: planetariums or planetaria) is a theatre built primarily for presenting educational and entertaining shows about astronomy and the night sky, or for training in celestial navigation.
The Hale Telescope represented the technological limit in building large optical telescopes for over 30 years. It was the largest telescope in the world from its construction in 1949 until the Soviet BTA-6 was built in 1976, and the second largest until the construction of the Keck Observatory Keck 1 in Hawaii in 1993.