Left panel: SDSS g - r colour index image. Orange arrow points to the eastern arc of the pseudo-ring. Cyan arrow points to an optical feature to the south. Blue and red tones indicate colour index in magnitudes. The pink, blue and green lines indicate the directions (or PA) used to compute the four radial profiles discussed in Sect. 4.3.2; they are repeated in the other panels. Central panel: 33 circular apertures of 1.25 kpc radius (12.7″) located over star-free areas of the pseudo-ring, represented over the CAHA2.2m and CAHA1.23m combined optical image. A bluer/redder region indicates a bluer/redder g - r colour index. The cyan arrow points again to the southern feature. Yellow marks indicate the connecting regions between the pseudo-ring and the inner parts of the galaxy. Right panel: de-projected SDSS g CAHA1.23m image of CIG 96; the lines of the radial profiles have been reoriented to preserve the correct PA.