and the SPHERE consortium image processing tools (Sect. \[sec:datareduc\]). SAO 206462 [$L$=4.89, @Coulson1995] was observed on 2013 March 24 UT around the meridian passage (airmass start/end 1.09–1.14) for $\sim$3.33h in pupil-tracking and saturated imaging modes. The star was regularly dithered between the bottom quadrants of the detector for sky background measurements. The observing conditions were good at the beginning of the sequence (DIMM seeing 0.5–0.7$''$ and coherence time $\sim$3ms)[, but deteriorated]{} with time (DIMM seeing 1.1–1.4$''$ and coherence time $\sim$1.5ms at the end of the observations). [Two hundred]{} data cubes of 160 co-adds of 0.25s were recorded covering a field of view rotation of 152.2$^{\circ}$. After binning the frames by groups of 100 and removing poor-quality frames based on the statistics of the total flux measured in an annulus of inner and outer radii 0.25$''$ and 0.5$''$, we were left with 226 images ($\sim$71% of the complete sequence). The inner and outer radii of the annulus were chosen to exclude the regions dominated by the bright stellar PSF wings and the background noise. The unsaturated PSF was recorded several times at regular intervals during the sequence using the same individual integration time and number of co-adds with the ND\_LONG neutral 