The 4 Laser Guide Star Facility (4LGSF), a new subsystem of the Adaptive Optics Facility (AOF) on UT4 of the Very Large Telescope (VLT), at ESO's Paranal Observatory in Chile. The facility saw first light in April 2016 and is the most powerful laser guide star system in the world. The image was taken by ESO Photo Ambassador Juan Carlos Muñoz-Mateos.
Image Credit: Juan Carlos Muñoz-Mateos/ESO
Explanation from: https://www.eso.org/public/images/ut4_4lasers-cc/
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