SPHERE SAM observations of HD 100546. The IRDIS (a) and IFS (b) images were produced with the MIRA package, applied to the closure phases and visibilities, with a hyperbolic regularization term. The images show extended scattered light and an empty gap free of stellar companions. The dashed contour shows the 9σ_MEM level from the I_{1.3 mm} continuum image. (c) IRDIS 5σ contrast curve for SAM observations in K1K2 band. A contrast of ∼7 mag is achieved between 50 and 200 mas.