Taken over several nights about 2 weeks ago this is right next to NGC6188.
The very delicate shock wave is reminiscent of the Vela Supernova Remnant.
I took some O111 for this to accentuate that shock wave which does not really show in luminance and shows a bit in Ha.
HaO111LRGB 135 150 45 30 50 50 for a total of 7 hours and 40 minutes.
CDK17, Proline 16803, Paramount ME, Astrodon Gen 11 filters.
http://upload.pbase.com/gregbradley/...35355641/large regular
http://upload.pbase.com/gregbradley/...55641/original large
Greg.