Region of NGC 3603 with the projected micro-shutter’s angle and dimensions. This RGB image is composed of High Acuity Wide-field K-band Imager (HAWK-I) F212n H₂ (Red), HST F160W (Green), and HST F168n (Blue). The stellar sources not discussed in this paper lie within the central micro-shutters, while the upper and lower shutters observe the nebula. The zoomed in section containing the source 3796 illustrates the nodding pattern utilised. JWST nods up and down, moving three neighbouring open micro-shutters north-east and south-west, observing 6 nebular regions in total. The position of the OB cluster is indicated by the blue star and arrows.