Result of the super-resolution line composition as described in Sect. 6.3 for the central [C II] spectrum (at (0′′, 0′′) offset). The array on the left shows the high-resolution Berkeley Illinois Maryland Association (BIMA) ¹²CO (1−0) data with a 5′′ spatial sampling. The [C II] beam FWHM covers the central 3 × 3 pixel. The second array from the left shows the spatial distribution of the peak intensities f_i. Darker pixels contribute more to the overall emission. The black pixels show masked positions that are not used. The third panel shows the array of artificial [C II] spectra in light red, and already weighted with the Gaussian weights applied during beam convolution in blue. The final beam convolved spectrum is a simple sum of all blue spectra in this panel. The plot on the right compares the final [C II]^lo spectrum (line) with the observed [C II]_obs. The residuum is shown below the spectrum. The peak intensities is limited to f_i ≤ 1. The line RMS is 199 mK.