Irradiance and illumination conditions over the High bank on January 16, 2015. The figures were simulated with OASIS (Jorda et al. 2010) at steps of 15 UTC min from 00:00:00 to 1:30:00 using the decimated DLR SPG SHA7 model of 500 thousand facets. Irradiance is shown in spectral color scaling alongside the cometary time at sub-solar longitude plus the respective time zone of the Khonsu bank (+1.3 cometary hours at φ = − 22.5°, λ = 199°). (a) 2015-01-16 00:00:00. (b) 2015-01-16 00:30:00. (c) 2015-01-16 01:30:00.