The payload consists of two instrument Electron Retarding Potential Analyzer (ERPA) and an Ultraviolet-Photo-Multiplier-Tube (UV-PMT), both with rocket heritage. UV-PMT will measure UV emissions around 130 nm to measure OI 130.4 and 135.6 nm lines with 12.5° FoV. ERPA will measure flux of precipitating electron for energies 10-150 eV with 22.4° FOV.
Block Diagram
