Validation of a fine coronagraphic alignment algorithm for the visible pathway dedicated to cophasing. The algorithm (Mas et al. 2012, A&A) allows fine re-alignment of the 4QPM coronagraph in a few iterations (@632nm, BW 10nm). The impact on FTO with an SCC can also be seen in the bottom window of each image (left and right). Left image: GUI with misalignment observable, right image: GUI with fine alignment obtained.