IRDIS/LSS coronagraphic intensity profiles with (dashed line) and without (plain line) the SLLC as a function of angular separation on both sides of the optical axis and normalized with respect to an off-axis PSF. Profiles are plotted at two wavelengths, 1600 nm and 2000 nm. The top panel presents the data acquired in SPHERE and the bottom panel the simulations performed at the same wavelengths with our SPHERE simulation model including all error terms. The central part between −0.2′′ and 0.2′′ without any data corresponds to the location of the FPM inside the slit.