Main panel: HST/F555W-band image (30 mas/pixel) with superimposed the field of views (FoV) of future instruments, such as VLT/MAVIS (IFU and imaging modes), ELT/MAORY-MICADO (imaging), and HARMONI (IFU), along with the layout of the MUSE-NFM targeting arc IV (transparent green box in the bottom-left corner, presented in Appendix C). The four arcs of Sunburst are indicated with I, II, III, IV. MUSE-NFM requires the presence of a very bright star within 3.4″ from the target, whilst future AO facilities will definitely probe stellar clusters down to the parsec scale in the most magnified regions. Right panels: zoomed region indicated with the orange shaded rectangle located in the main panel over the objects 5.2 h and 5.3 h (left). In particular, the region enclosing the knots 5.2 h and 5.3 h will be covered with MAVIS and HARMONI IFUs which will probe 1−5 parsec per spaxel, while imaging with MAVIS and MAORY-MICADO (wide blue and magenta squares in the main panel) will probe the parsec scale in the optical and near-infrared, respectively.