W. M. Keck Observatory Adaptive Optics (image) W. M. Keck Observatory Share Print E-Mail Caption Adaptive optics is a technique used to correct for the blurring effect of the Earth's atmosphere. W. M. Keck Observatory's laser guide star adaptive optics (LGS AO) system uses a laser to create an artificial star to measure for atmospheric distortions. This results in sharp, high-resolution images that allow astronomers to see celestial objects, such as hidden galaxy mergers, in ultra-fine detail. Credit BILLY DOANER Usage Restrictions None 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.