Three colour near-IR composite image made using Ks (2.2 μm, red), H (1.6 μm, green) and J (1.2 μm, blue) images obtained by the UKIDSS overlaid with grey contours of the ALMA band 6 (1.3 mm) continuum emission (robust 1.5 weighting) from the 12 m array only. The contours are at the 3, 4, 5 σ levels (1 σ = 0.16 mJy beam⁻¹) to highlight the weaker emission features. The position of peak continuum emissionfrom G17.64 is indicated by the plus symbol at (0,0) offset (J2000 18^h 22^m26.385^s − 13°30′11.97″) – the continuum contours are not plotted due to the overlap with ¹³CO contours. In the IR, G17.64 at the centre is the dominant source, while to the east, west and south-east the emission isassociated with the reflection nebula. The white dashed ellipse is indicative of a possible remnant dusty toroid, or underlying dark lane structure. The coloured contours show the moment zero maps of the ¹³ CO outflow emission integrated over various velocity ranges. The cyan and orange contours show the blue- and red-shifted highest velocity emission integrated from 16.0 to 18.3 km s⁻¹ and 35.0 to 41.0 km s⁻¹, respectively. The contour levels are at 5, 10 and 15 σ, where σ is 3.28 and 4.57 mJy beam⁻¹ km s⁻¹ for the blue- and red-shifted high velocities. The blue and red contours indicate the integration of the lower outflow velocities from 18.3 to 21.4 km s⁻¹ for the blue-shifted emission and from 24.7 to 35.0 km s⁻¹ for the red-shifted emission. We note that the source V_LSR = 22.1 km s⁻¹. These contours are at 4 and 5 σ, where σ is 6.25 and 10.06 mJy beam⁻¹ km s⁻¹ for the blue- and red-shifted velocities. The dotted white line indicates the outflow axis at a PA of ~135° (Kastner et al. 1994; Maud et al. 2015b, see also Appendix A) which passes though G17.64 and the points of highest velocity blue- and red-shifted outflow emission along with the IR nebula. A synthesised beam for the mm emission is shown to the bottom-left, a scale bar to the bottom-right, and the legend for the integrated velocities at the top. The primary beam cut off is beyond the map extent.