Sh2-9, also called Gum 65 by itself is a rarely imaged combination emission and reflection nebula in the Scorpius constellation, surrounding the multiple star system Sigma Scorpii. The nebula is northeast of the globular cluster, Messier 4, included here for context.
Always a tricky challenge to image this under my suburban Bortle 6/7 skies, I'm quite pleased with the outcome as I used a few of Marcus' tips including shooting a few hrs of LUM. The complimentary colours of cool Al-Niyat and warm M4 seem to balance one another nicely and the star definition in M4 itself is remarkable.
At long last, the big Tak has it's spacing perfect now, so I finally have round stars in all four corners.
Astrobin Version
I've ordered a new TOA-35 reducer to give me a wider FOV, so when that arrives, I'll be able to frame some of these larger objects with a bit more "space" to allow more breathing room.