A spatially resolved VLT ISAAC (outflow) spectrum. The spectrum, taken across the minor axis of the main hourglass shell, is shown at high contrast with the most prominent atomic and molecular emission lines visible. Two-micron spectrum (top), 2.25 arcsec from the central region along the nebula’s minor axis, shows a plethora of strong He recombination and H₂ vibrational lines. Bottom is an enlarged view of the region of this spectrum over the range 2–2.2 micron. More details of this spectrum are shown in Fig. 6