Objects identified in the three redshift slices overplotted on the narrow-band image (black contours). Blue dots are Hα emitters, green asterisks are [Oiii]/Hβ, and red crosses represent the [Oii] emitters. Lower S/N areas of the image that were excluded from the basic sample are shaded in grey. Multiple symbols that are over-plotted represent galaxies with multiple redshift solutions. Open circles represent galaxies from the “extended sample”. Bars of length 1 comoving Mpc at the given redshift is over-plotted in the centre of the image with same colour-coding as for the objects.