Decomposition of the major-axis spectrum of NGC 1366 (black line) in the analyzed spatial bins (r = −20.9″,−12.6″,11.4″ and 19.9″). The best-fitting model (magenta line) is the sum of the spectra of the corotating (red line) and counter-rotating stellar component (blue line) and of the ionized-gas component (cyan line). The normalized flux of the fit residual (green line) has a false zero-point for viewing convenience. The yellow shaded area indicates a spectral region masked in the fit that is due to the imperfect subtraction of the spurious signal, which is the result of a reflection on the EMMI CCD.