M17 SHO. I managed to get more data last night (now suffering for it - wrecked!). Went form 2.75 hours to 6.75 hours. Could pull a lot more background, although some of this was cropped for framing purposes. Perhaps a little over the top, but loved a suggestion from another forum suggesting some kind of battle between Fire and Ice. Same gear as previous image.
ZWO ASI1600MM-Pro (Gain 200, -10º)
Skywatcher 8" f4 Newtonian
Skywatcher EQ6-R
Ha 5nm 51x180s, [OIII] 3nm 42x180s, [SII] 3nm 42x180s
Processing in Pixinsight
Astrobin:
https://www.astrobin.com/full/fttyg6/0/