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Nice Observatory
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== The Great Refracting Telescope called ''the Grande Lunette'' == The main instrument of the Nice Observatory is the refracting telescope housed in the Grand Equatorial. It is 18 meters long, with a 76 cm diameter lens. It became operational for the first time in 1888 and was, at the time, the largest refracting telescope in the world. It was later surpassed by the telescope at the Lick Observatory, which has a 91 cm diameter lens.
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