Comparison of cuts along the spatial dimension of the spectra before (plain, black) and after (plain, red) SD at λ = 1.65 μm. Since the star was kept outside the slit to prevent saturation, the profile of the primary before SD does not show the true peak of the primary PSF, but instead the level of the halo brightness with the slit decentered by  ~0.2′′. The PSF profile from the star obtained from Fig. 1 is overplotted (dashed, black) to give an estimation of the true contrast (4.17 mag in H-band) between the companion and the primary. For clarity, the main plot has been cut at 16 ADU, but the sub-plot shows the full profiles on a log scale with the same units in x and y.