I don't know of any observations of this PN by David Frew.
He gives the distance as 1.7 kpc. (5,500 l yrs)
He wrote a PhD thesis called
Planetary Nebulae in the Solar Neighbourhood: Statistics, Distance Scale and Luminosity Function. (March 2008)
It can be downloaded (20Mb) here:
http://geosn.com/
K1-27 seems to be brightest in H alpha.