The 2 ALMA Antennas (IMAGE) ESO Caption These are the two ALMA antennas used in the project's successful test observation of "first astronomical fringes," at the Operations Support Facility at an altitude of 2,900 meters. Credit ALMA (ESO/NAOJ/NRAO) 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.