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extremely large telescope

astronomical observatory featuring an optical telescope with an aperture of more than 20 m diameter

en-US/ɪkˈstɹimli ˈlɑɹd͡ʒ ˈtɛlɪˌskoʊp/
en-GB/ɛkˈstɹiːmlɪ ˈlɑːd͡ʒ ˈtɛlɪˌskəʊp/

Categories:

optical telescope