NGC6543, The Cat's Eye Nebula

Here's also one kind of unfinished project from April... I found some flexure from my focuser when shooting towards the eastern sky so I turned back the to western sky and discontinued with this one.

And here's a crop of the Nebula:

Here's about 5 hrs of exposure of this Planetary Nebula.
                                                  Ha     =    3 * 1800" + ~15-20 * 180/300" for core
                                                  OIII   =    5 * 1800" + ~15-20 * 180" for core

Full size on Astrobin