A tiny part of the Vela SNR, around RA 08:29 Dec -43:50, chosen by Trish as looking particularly interesting.
Field approx 30' arc on a side. Thumb shows North up.
H-alpha 11 hrs mapped to yellow, OIII 10 hrs mapped to blue, then palette rotated 20 deg toward red, for a nod toward slightly more natural colours.
(To recover original channels, set the PhotoShop hue slider to +20).
The H-alpha emitting regions and the OIII emitting regions are very disjoint, almost as if they represent two separate unrelated objects.
Of particular interest are four extremely sharp, extremely long needle-like shock fronts, one almost pure OIII, two almost pure H-alpha, and only one showing much co-location.
The full size image is here.
The general effect is exactly what it is: a close-up of a tremendous, recent, chaotic explosion.
A mess of pterodactyls, pteranodons, nonspecific dragons, and perhaps one dolphin all engaged in disreputable and tatty combat.
(Another part of the Vela SNR
that we did last year has one really good dragon).
Getting any imaging at all done this month has been a challenge. Scalding hot nights, terrible seeing, scudding cloud, screaming winds wanting to rip the shutters off the observatory dome. But for this image (taken over three nights spanning full moon) seeing wasn't too bad.