Results for β Pic in M^′ band after the PSF subtraction with PynPoint. The image on the left shows the result with mean backgroundsubtracted frames and a PSF subtraction with 21 principal components after pre–stacking 500 images. The image on the right shows the result with PCA background subtracted frames and a PSF subtraction with 25 principal components after pre-stacking100 frames. The radius of the inner mask is 0.16′′ . The S/N values are 34.5 and 32.5, respectively. North is up and east is to the left of the images. The scale is in arbitrary linear units.