EUSO-SPB2 (Extreme Universe Space Observatory on a Super Pressure Balloon II) is a precursor mission for a future space observatory for multi-messenger astrophysics. This mission is the continuation of the JEM-EUSO science program on ultra-long duration balloons, started with the EUSO-SPB1.
The EUSO-SPB2 will host onboard two telescopes. One is a fluorescence telescope designed to detect ultra high energy cosmic rays via the UV fluorescence emission of the showers in the atmosphere. The other one measures direct Cherenkov UV/VIS light emission from air showers at PeV energies and other optical backgrounds for cosmogenic tau neutrino detection. Both the telescopes have 1-meter diameter apertures with modified Schmidt optics.
The planned launch date is 2022 with a flight duration target of 100 days. In this talk, we discuss the scientific motivation of the mission, the characteristics of each telescope and the current status.