Continuum and line emission images of IRAS 16293E. Left: colour map of para-D₂H⁺ integrated intensity emission with white contours (colour scale and white contours from 0.01 to 0.07 by 0.01 K km s⁻¹ plus a contour at 0.075 K km s⁻¹; contour spacing of 0.01 K km s⁻¹ = 1.5σ) Centre: IRAC-1 image at 3.6 μm. White contours trace para-D₂H⁺ as in the left panel. The red contours trace the SCUBA-II 850 μm emission (20–160 by 20 [≈10σ] MJy sr⁻¹). Right: IRAC-4 image at 8.0 μm. The white contours trace para-D₂H⁺ as in the left panel. The orange contours trace the N₂H⁺ (J:4–3) integrated intensity (0.3 to 2.3 by 0.4 [= 12σ] K km s⁻¹). The yellow cross marks the centre of the D₂H⁺ emission (α_J2000: 16^h32^m30.51^s, δ_J2000: −24°28′53.7″, see also Fig. 2). The red cross marks the peak position of the dust and N₂H⁺ (J:4–3) emissions. The black cross (left panel) marks the position of the observation of D₂H⁺ and H₂D⁺ by Vastel et al. (2004). The yellow arrow traces the direction of the outflow from the IRAS 16293–2422 protostellar system and the red arrow the outflow from WLY 2-69. The grey and white disks represent the JCMT and APEX beams after smoothing to 14″.