Image plus contour plots showing (continuum-subtracted) Brγ 2.166 μm, H₂ 2.122 μm and [Fe ii] 1.644 μm emission towards HH 34-IRS, HH 300-IRS, SVS 13, HH 72-IRS and HH 999-IRS. Only Brγ 2.166 μm and H₂ 2.122 μm images are shown for HH 26-IRS. For reference, contours showing the position of the continuum adjacent to each emission line are over-plotted in yellow. Black contours start at 3σ and increase in multiples of 2. The yellow continuum contours mark 50%, 75% and 95% of the peak flux in each continuum image. All figures are plotted to the same scale; the scale bar corresponds to 0.8″ in all data. The horizontal axis in each panel is aligned with the nominal flow direction.