Extended Data Fig. 4: Zoomed-in images at the position of FRB 180916.J0158+65.
From: A repeating fast radio burst source localized to a nearby spiral galaxy

Gemini data at r′ (a) and g′ bands (b). The position of FRB 180916.J0158+65 is highlighted by the white cross. The uncertainty in its position is smaller than the resolution of these images. The dashed lines represent the orientation and placement of the 1.5-arcsec spectroscopic slit used to obtain the optical spectra. Note that the slit does not cover the full star-forming region but the region centred on FRB 180916.J0158+65, and that the whole region is strongly affected by extinction (E(g − r) = 1.73 ± 0.09).