I had an opportunity to add another 6 hours of data the other night in what was the best seeing I can remember imaging in from here - normally subs are around the 2.5" FWHM but I was able to get the majority of the extra 6 hours at between 1.7 and 1.9" FWHM.
The attached image is 24 hours total integration over multiple nights in the last 3 weeks. Taken with an Esprit 120 on an EQ8 using the Atik One 6.0 with Baader Ultra narrowband Ha (3.5nm) filter.
I have taken the processing a bit further this time in PI then the previous version.
A larger version at
https://www.astrobin.com/cbrtw4/
Brian