Hi Marco
Thank you for that, very informative. I've never considered using hdr on OSC cameras, so that's something for me to try.
I agree that narrowband gives amazing results, but in this instance I've looked at it from an artistic perspective. I believe that the vast majority of people, excluding members of the astronomy community, would pick this one out against most narrowband versions, and also be more likely to name it correctly. :)
Narrowband can reveal more intricate details and break down regions to show as different colours. Features such as the planetary nebula which I believe in this case is called WeBo1 stand out more clearly. So yes that's what I've always done with this target up until now. You've shown us some great images, that's really nice to see.
Cheers,
Ray