Abstract
Extragalactic planetary nebulae (PNe) are excellent distance indicators and very useful probes of the chemical composition of the ISM at different epochs and its evolution due to low-intermediate mass stars. Outstanding astrophysical problems can be analyzed by studying PNe, which require deep observations of representative galaxies in order to obtain a complete PN sample for at least the two brightest magnitudes. For this purpose we initially observed NGC 1068 (SAB(rs)) and NGC 2681 (SAB(rs)). We were only able to observe the Hα wavelength region and will require the corresponding [O III] observations to be carried out in the future.
