1 INTRODUCTION

2 NEBULAR H α FLUXES FOR NORTHERN PLANETARY NEBULAE  
2.1 The IPHAS survey  
2.2 Planetary nebula source selection  
2.3 H α aperture photometry measurements of PNe observed by IPHAS  
2.4 Correction of the Hα filter fluxes for [N ii] contributions  
2.5 Comparison with the fluxes of Frew et al. (2013)  

3 NEBULAR EXTINCTIONS  
3.1 Determining dust extinctions to the nebulae  
3.2 Maximum expected extinctions along PN lines of sight  

4 EXTINCTION DISTANCES TO GALACTIC PLANETARY NEBULAE  
4.1 Distances using the H-MEAD 3D extinction mapping algorithm  
4.2 Distances using the Bayestar 2019 3D extinction mapping algorithm  
4.3 Distances using the Stilism 3D extinction mapping algorithm  
4.4 Comparison with Gaia DR2 distances  

5 DISCUSSION AND CONCLUSIONS