NOAO's Cerro Tololo Interamerican Observatory (IMAGE) NASA/Goddard Space Flight Center Caption An aerial image of the NOAO's Cerro Tololo Interamerican Observatory in Chile. The largest dome is home to the Blanco 4-meter telescope. Credit NOAO/AURA/NSF Usage Restrictions None License Licensed content 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.