H₂ excitation map. Map of molecular gas temperature derived from the S(1)/S(5) line ratio (shown at the 0.20″ pixel scale of the S(1) line). This characteristic temperature also represents the distribution of temperatures at each location. The comparison to the [Fe II] and [Fe VII] lines (white and blue contours respectively) show that the warmer H₂ emission traces the edge rather than bulk of the ionisation cone. Specifically, it traces the northern edge of the western cone and the southern edge of the eastern cone.