Map of T_e derived from the magnitude of the Paschen continuum jump at 8250 Å ratioed by the dereddened H I Paschen 11 (8862.8 Å) emission line strength. Initial estimates of T_e and N_e from the [S III] and [Cl III] ratio maps (Sect. 5.1) were applied, followed by two iterations with the derived T_e map from the Paschen Jump. See text for details. The low T_e values over the central star are not representative and arise from the strong stellar continuum. The log F(H β) surface brightness contours are as in Fig. 7. The mean signal-to-error is 13.