Nice work there Greg! Yes, there is loads of Ha around Zeta, Rho and other crew. The Sharpless Ha stuff Sh2-1, Sh2-27 (Zeta Ophiuchi big red blob), Sh2-9 (next to M4 globular). And the big loop around the head of Scorpius - they have shown up on my DSLR Ha work - and you have it in this image. Looks awesome in a wide context against the Milky Way. Love the composition - you just squeezed in the great red blob (zeta) which is very important. I cannot believe that the zeta nebula hasn't been nailed before as a target. Anyone? Awesome work
