Detail of the area around galaxy IC 1756. The brightness of foreground stars adds light to the faint galaxy structures, as the isocontour at 28 mag arcsec⁻² shows. The high density of objects in the region also affects the surface brightness properties of our target, and therefore many masking areas would be needed (see Sect. 4.1) in order to keep only the galaxy light in our study. For this reason, this galaxy was deemed unsuitable for further analysis here.