Pleased with this. Approx 36' arc central Rosette, with 5hrs H-alpha (green), 5hrs OIII (blue), and 9 hrs of SII (red).
Big one here
Five times the data allowed good rejection of cosmic rays and other non-constant artefacts, so much smoother than our previous effort.
We were surprised by how much SII there was to capture. That suggests a fairly advanced and active star-forming region, where recent supernovas have enriched the medium with lots of highly processed material - star-gizzards. There are fine wispy shock fronts, relatively strong in SII, draped across the central cavity.
Notice also the blue shocked material strong in OIII at 3 o'clock, which resolves into an intriguing animal with a rabbit's head, and a hog's haunches.
Aspen CG16M, 1 hour subs, unbinned, -30C. PlaneWave 20" CDK on MI-750 fork. Processing using GoodLook 64.
Best,
Mike and Trish