The physical pair NGC 1596 and NGC 1602. In the redshift space these galaxies are separated by 230 km s⁻¹, as shown by the bottom right panel. The VST colour composite image (RGB as in Fig. 12) of the pair (left panel, north on is the top and east is to the left, FoV = 1734 × 17) shows that NGC 1602 outskirts appear distorted and, in projection, roughly in contact with NGC 1596, as well as H I contour levels (4, 6, 9, 13.5, 20.3, 30.5, 45.7, 68.6, 102.8, and 154.2 × 10¹⁹ cm⁻²) by Chung et al. (2006) shown in the top right panel. These contours are superposed on our VST unsharp masked image in the top right panel. Crosses indicate the optical centres of the two galaxies. The synthesized beams (49.9 × 37.6 arcsec²) are also shown at the bottom left of this panel. Similar results for H I are in Fig. 14 of Elagali et al. (2019).