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From ESOblog: “How ESO collaborates with ESA” » Glistening against the awesome backdrop of the night sky aboveESO’s Paranal Observatory, four laser beams project out into the darkness from Unit Telescope 4 UT4 of the VLT, a major asset of the Adaptive Optics system.
richardmitnick 4:04 pm on June 2, 2018 | Full size is 1280 × 1923 pixels Reply
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