Observing the Galactic Center (image) Thirty Meter Telescope Share Print E-Mail Caption The two W. M. Keck Telescopes on Mauna Kea, Hawaii, observing the galactic center. The lasers are used to create an artificial star in Earth's upper atmosphere, which is then employed to measure the blurring effects of the lower atmosphere (the unfortunate effect that makes the stars twinkle in the night sky). The blurring gets corrected in real time with the help of a deformable mirror. This is the so-called adaptive optics technique. Credit Ethan Tweedie Usage Restrictions With credit: Image courtesy UCLA/Ethan Tweedie Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.