Three representative spectral channels at velocities 180, 0, −180 km s⁻¹, for the disk Petunia (upper panels) and the merger Adenia (bottom panels) at 60 deg. The left and right subfigures show the high S/N ALMA mock data at high and low-angular resolution. For each subfigure: the upper row shows the data (black contours) and the ^3DBAROLO model (red contours). The contour levels are at 2.5, 5, 10 times the rms noise per channel. The gray ellipses in the first panels denote the synthetized beam of the observations. The bottom row shows the residuals normalized to the rms noise.