Poster abstract details

We have used the SuperCOSMOS H$\alpha$ Survey (SHS; Parker et al. 2005) to look for faint outer structures such as haloes, jets, ansae and knots around known planetary nebulae across 4000 sq. degrees of the southern Milky Way. The SHS covers a strip $\sim$20 degrees wide along the Galactic equator south of declination +2 deg. The fine resolution ($\sim$1 arcsec) and deep sensitivity (2--5 Rayleighs at H$\alpha$) of the SHS make it ideally suited for this purpose. Quotient images (H$alpha$ / broadband red) were generated for each PN in the survey area of sufficient size to ensure that faint outer structures could be found with some extending more than 10~arcminutes away from the central nebula. In this poster we will present some of the more interesting discoveries, and give some preliminary statistics on the prevalence of outer structures in PNe of different morphological classes and surface brightnesses.