ESO Astronomy - Unit telescope 4 (called Yepun) at ESO's VLT sends up laser light to create an artificial guide star. This is part of the Adaptive Optics system at the VLT.
Laser Guide Star for Very Large Telescope - Stock Image - R122/0187 - Science Photo Library
Very Large Telescope - Wikipedia
LGSF overview installed on VLT-UT4 (Yepun). Note that the Laser Clean... | Download Scientific Diagram
File:8.2-m primary mirror of Yepun, Unit Telescope 4 of ESO's Very Large Telescope.jpg - Wikimedia Commons
ESO Very Large Telescope 4 lasers on Yepun (CL) | sciencesprings
Telescope Yepun - Paranal Observatory, Chile - Yepun and the Magellanic clouds - Paranal Observatory, Chile: The 8,2m
ESO Signs Agreement with Breakthrough Initiatives to search for planets nearby
The door is open': Iranian astronomers seek collaborations for their new, world-class telescope | Science | AAAS
The ESO VLT Yepun Telescope opening | ESO
Inside the VLT Yepun Telescope | ESO
Moon rise at the Very Large Telescope | ESO
File:Swirling Star Trails Over Yepun.jpg - Wikimedia Commons
Yepun and the Atacama Desert | The Very Large Telescope (VLT… | Flickr
Antu | Kueyen | Melipal | Yepun | The Very Large Telescope (… | Flickr
Yepun to the Universe | ESO
English: A laser beam shoots out of Yepun, the fourth Unit Telescope of Europe's flagship observatory, ESO's Very Large Telescope (VLT). This beam is used to create an artificial star above Paranal
Very Large Telescope - Wikipedia
Fulldome View of Yepun Telescope and Magellanic Clouds @ Astrophotography by Miguel Claro
Yepun Telescope and Magellanic Clouds @ Astrophotography by Miguel Claro
The VLT Unit Telescopes Yepun and Melipal | ESO
World's most powerful telescope takes us to the edge of a black hole | New Scientist
ESO Astronomy - Unit Telescope 4 (Yepun) of the VLT using... | Facebook
Yepun and the Milky Way | ESO
Yepun's Laser and the Magellanic Clouds | The Planetary Society
