EUSO-SPB: In-flight performance

The Extreme Universe Space Observatory on a Super Pressure Balloon (EUSO-SPB1) is a path-finder mission within the JEM-EUSO program with the aim of detecting, for the first time from the edge of space, Ultra-High Energy Cosmic Rays by means of the fluorescence technique. EUSO SPB was launched April 24th 23:51 UTC 2017 from Wanaka, New Zealand as a mission of opportunity on a NASA super pressure balloon test flight planned to circle the southern hemisphere. After 12 days 4 h aloft, the flight was terminated prematurely in the Pacific Ocean about 300 km SE of Easter Island. This presentation will review the instrument and its in-flight performance. Preparations for a EUSO-SPB2 mission is underway. © 2018 Elsevier B.V