International Ultraviolet Explorer
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Gran Telescopio Canarias
Mercator Telescope
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Extremely Large Telescope
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Schott AG
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List of acronyms: G
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Roque de los Muchachos Observatory
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Giant Magellan Telescope
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Sextans A
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Optical System for Imaging and low Resolution Integrated Spectroscopy
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William Herschel Telescope
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Laser guide star
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Magellan Telescopes
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Kallichore (moon)
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Rogue planet
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Centered hexagonal number
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List of astronomical observatories
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GTC
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La Palma
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Wolf–Rayet star
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List of largest optical reflecting telescopes
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Active optics
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W. M. Keck Observatory
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Ritchey–Chrétien telescope
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VxWorks
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University of Florida
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Timeline of telescopes, observatories, and observing technology
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Grantecan
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