The Airbus BASS is a space qualified coarse bi-axis sun sensor designed for low earth orbit (LEO), geostationary earth orbit (GEO), and deep space applications. In the BASS series, the Airbus Defence & Space offers four products - BASS7 GEO, BASS17 LEO, BASS17R LEO/GEO. It consists of four pairs of solar cells, a printed circuit board (PCB) to connect the cells, and two sun detection axes in one unit. Some of its other key features include ATOX resistive paint, high strength capability, and thermal coating adapted to the mission.