Hα (left) and [O iii] λ5007 (right) narrowband images of SBS 0335-052E created from the MUSE data cube. East is left and north is up. The colour scale within the high-SB region encodes fluxes from 10^-18 to 10^-15 erg s^-1 cm^-2 for Hα and 8 × 10^-19 to 8 × 10^-16 erg s^-1 cm^-2 for [O iii], while for the outer low surface-brightness region the encoding is shown by the colour bar on the right. An asinh scaling is used. SB contours are drawn at [2.5,5,12.5,1250] × 10^-18 erg s^-1 cm^-2 arcsec^-2 for Hα and [0.5,5,12.5,1000] × 10^-18 erg s^-1 cm^-2 arcsec^-2 for [O iii]. To highlight the low-SB features, the images were smoothed with a σ = 1 px (0.2′′) Gaussian kernel.