EUI, Extreme Ultraviolet Imager

The EUI consists of three telescopes, the Full Sun Imager (FSI) and two High Resolution Imagers (HRILYA, HRIEUV), which are optimised to image in Lyman-α and EUV (17.4 nm, 30.4 nm) to provide a coverage from the chromosphere up to corona. EUI scientific data consists of calibrated and raw data images acquired by the three EUI telescopes (FSI, HRIEUV, HRILYA). Following the Solar Orbiter orbit profiles, the data coverage, imaging cadence and effective spatial resolution of the EUI data are very variable.