Assertion: telescope's mirror | /r/AtLocation | tandem
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text: Giant Magellan Telescope, beginning construction in 2011 Organization: A consortium of nine universities and research centers Location: Las Campanas Observatory, near La Serena, Chile Claim: Where the Large Binocular Telescope boasts two large mirrors working in tandem, the Giant Magellan raises the ante to seven mirrors, each 8.4 meters (about 28 ft) across.