Left panel: three-colour image with 3.6 μm (blue), 4.5 μm (green) and 8.0 μm (red) of the H II region G263.619-0.53. The dashed blue circle indicates the area of the IRS 16 stellar cluster defined by Massi et al. (2003). The dashed white square highlights the area observed with GSAOI + GeMS, comprising the MHO 1502 jet. The dashed white circle is centred at (α,δ)(J2000) = (08:45:34.2; −43:51:54.1), has a radius of 1.5′, and defines our search area. The white contours mark the H₂ knots of MHO 1502 and the blue cross indicates the location of IRAS 08438-4340, the central source associated with the HII region. The coloured squares show the YSOs detected in the [8.0] vs. [4.5]–[8.0] diagram and are classified according to the [3.6]–[4.5] vs. [5.8]–[8.0] diagram (see Fig. 3) as follows: Red squares are Class I, orange squares denote Class I/II, and green ones are Class II sources. Blue squares correspond to Class III as well as the foreground and background sources. Right panel: inverted grey-scale H₂ image of the MHO 1502 jet obtained with GSAOI + GeMS. YSOs in the field are shown. The symbols used are the same as those in the left panel. The dark green arrows highlight the H₂ emissions not associated with the MHO 1502 jet (see also Fig. 1).