Hi Robin
Yes – I saw a vertical extension beyond the normal line spectrum too… and was wondering about nebulosity. I think R Mon maybe even ‘worse’ in this respect as it is associated with NGC 2261 (Hubbles variable neb.)? I havent taken this one yet.
My binning could have been slightly tighter (but not much). And if the nebulosity is part of the system, then its fair game perhaps..
Kevin