Multi-Gaussian modelling of the Hα line in He 2-10. Top panel shows the total Hα intensity map and the six representative slices (blue-dashed segments) used to extract the position-velocity plots. These are shown in the panels below (left column: data, middle column: model, right column: residual), using a width of three spaxels. Iso-intensity contours are at 2, 5, 10, 20, 10², 10³, 10⁴ times the rms noise σ. An additional contour at −2σ is shown in grey. Arrows mark the regions where emission from the [N II] doublet leaks into the Hα cube.