3-D ionization structure (in stereoscopic view) of Planetary Nebulae: the case of NGC 1501

R. Ragazzoni, E. Cappellaro, S. Benetti +2

Long-slit echellograms of the high excitation planetary nebula NGC1501, reduced according to the methodology developed by Sabbadin et al. (2000a, b), allowed us to obtain the ``tru…