Mosaic including the HST image in the F606W band (left panels) and a zoomed unsharp image of the inner regions (right panels). Mosaics are shown for NGC 1640 (upper panels) and NGC 4477 (lower panels). The blue squares in the galaxy centers (left panels) represent the size and orientation of the unsharp masked image (right panels). The scale bars at the top represent 1′′.