Simulating Large Area, High Intensity AM0 Illumination – Test Results from Bepicolombo and Solar Orbiter QualificationC. Oberhüttinger, H. Nesswetter, D. Quabis and C. G. ZimmermannE3S Web Conf., 16 (2017) 02007DOI: https://doi.org/10.1051/e3sconf/20171602007