Corona Australis cluster: left: SCUBA-2 map at 450 μm (JCMT archive). Contours are at [12, 18, 30]σ where 1σ = 0.3 mJy beam⁻¹; central: ALMA map of continuum emission at 1.3 mm. The first contour and steps are 6σ (0.48 mJy beam⁻¹) and 70σ, respectively. Right: Zoom onto IRS7B, where only the contours at [3, 6]σ are shown. The detected protostellar objects are labelled. SMM 1A is not detected at 1.3 mm. The cyan line shows the PA of the IRS7B system (i.e. 115°; see text), while the arrow indicates the perpendicular direction. Dashed lines follow the elongated structures detected at 3σ. The synthesised beam is shown in the bottom-left corner of each panel.