Photometry in the i-band of AHCJ2239+3832. Left: Optical i-band image overlaid with measured geometries from H I morphology (blue) and from i-band isophotal fitting (orange). The radius at which the optical geometry is plotted corresponds to the outermost data point in the surface brightness profile. The radius at which the H I geometry is plotted corresponds to the extent of the disk as obtained from CANNUBI. The crosses denote the obtained optical (orange) and H I (blue) centers. Right: Surface brightness profile (orange) and the corresponding best fit with a Sérsic profile (black).