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Currently the largest optical telescope is "The Great Canary Telescope" (Gran Telescopio Canarias) in Spain, it has an apeture of 10.4 metres. There is an optical telescope under construction in Chilie that when completed will have an apeture of 21.4 metres, called the Giant Magellan Telescope. The largest single dish apeture radio telescope is the Arecibo Radio Telescope in Puerto Rico which is 305 metres.

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16y ago

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