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  2. Arecibo Telescope - Wikipedia

    en.wikipedia.org/wiki/Arecibo_Telescope

    The Arecibo Telescope was a 305 m (1,000 ft) spherical reflector radio telescope built into a natural sinkhole at the Arecibo Observatory located near Arecibo, Puerto Rico.A cable-mount steerable receiver and several radar transmitters for emitting signals were mounted 150 m (492 ft) above the dish.

  3. Gran Telescopio Canarias - Wikipedia

    en.wikipedia.org/wiki/Gran_Telescopio_Canarias

    The Gran Telescopio Canarias (GranTeCan or GTC) is a 10.4 m (410 in) reflecting telescope located at the Roque de los Muchachos Observatory on the island of La Palma, in the Canary Islands, Spain. It is the world's largest single-aperture optical telescope. [1] Construction of the telescope took seven years and cost €130 million.

  4. List of largest optical reflecting telescopes - Wikipedia

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

    Multiple mirror telescopes that are on the same mount and can form a single combined image are ranked by their equivalent aperture. Fixed altitude telescopes (e.g. HET) are also ranked by their equivalent aperture. All telescopes with an effective aperture of at least 3.00 metres (118 in) at visible or near-infrared wavelengths are included.

  5. List of largest optical telescopes historically - Wikipedia

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

    The following is a list of largest single mount optical telescopes sorted by total objective diameter (aperture), including segmented and multi-mirror configurations. It is a historical list, with the instruments listed in chronological succession by objective size.

  6. List of the largest optical telescopes in North America

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

    Name Image Effective aperture m Aper. in Mirror type Nationality / Sponsors Site Built Large Binocular Telescope (LBT): 11.9 m (8.4 m×2) 330" × 2: Multiple mirror, 2

  7. List of large optical telescopes - Wikipedia

    en.wikipedia.org/wiki/List_of_large_optical...

    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.