Stig Östlund

fredag, juli 01, 2011

Evening at Gemini North


The Gemini North Telescope during evening twilight. Featured in the foreground of the telescope is the laser guide star (LGS) clean-room (blue box with white door). The Gemini solid-state sodium laser is located in this box and shines up through a network of tubes, relaying optics (also visible) where the beam is "launched" by optics located behind the secondary mirror. (Date of Image: April 2005)

Credit: Gemini Observatory

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