Fig. 5. Line images at various velocity bins, reconstructed from the IRSPEC spectra discussed in Sect. 2, all frames are cut to the same levels as the v=-60 km s^-1 images. Note that [FeII] (1.644 µm) shows bright filaments moving by up to 250 km s^-1, while H₂ (2.121 µm) is narrow and unresolved (i.e. FWHM130 km s^-1). The colour images are also available at http://www.arcetri.astro.it/~oliva