  Despite years of effort, the impact of central star binarity on planetary
nebula formation and shaping remains unclear. This is hampered by the fact that
detecting central star binarity is inherently difficult, and requires very
precise observations. The fraction of planetary nebulae with binary central
stars therefore remains elusive. This work presents initial results of central
star analysis using data from the VST H$\alpha$ Survey of the Southern Galactic
Plane and Bulge (VPHAS+). The true central star of PN Hf 38 has been revealed,
and it exhibits a 0.465$\pm$0.334 $i$ band magnitude excess, indicative of a
M0V companion.
