Narrow-band images (15 Å wide, centred on λLyα(zQSO)) for our 5 quasars. These images were created from the quasar-subtracted datacubes using the empirical PSF subtraction method. The position of the spaxel used for scaling the PSF image is indicated by a cross; this position corresponds to the centroid of the quasar nucleus. Colours indicate multiples of the standard-deviation per pixel σpix, calculated for each image. The values of σpix are (2.3, 1.4, 2.7, 2.6, 3.5) ×10-17 ergs-1 cm-2, from top left to bottom right. North is up, and east is to the left. Axes ticks are Δδ and Δα in arcseconds with respect to the quasar centroid.
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