The Gemini South laser guide star тАЬconstellationтАЭ (upper left) is captured in this image. The image shows the 50-watt laser beam as it shines upward toward the atmospheric sodium layer about 55 miles (90 kilometers) above earthтАЩs surface to create a pattern of five artificial guide stars used to sample atmospheric turbulence for the Gemini ObservatoryтАЩs GeMS adaptive optics system. The yellow-orange beam is caused by scattering of the laser's light by Earth's lower atmosphere. The 30-second exposure was obtained January 21-22, 2011, using a 500mm f/5.6 Celestron telescope with a Canon Rebel XT camera at an ISO setting of 1600. Gemini Observatory/AURA