For now this one will have to do, I got up to 380 minutes integration time last night but the clouds rolled in and that was that. I did a quick test image of Antares and with the SCT it displayed the same sort of reflection issue that was resolved by the UV-IR filter on the refractor, so I may have to go again on all the narrow FOV stuff later with a filter suited to the SCT. One thing that really benefited on the refractor was star colours so I guess I should save a few dollars and get an SCT threaded filter. There is an off the shelf Atronomik SCT UV-IR cut filter available with three band pass widths to choose from.
https://www.astrobin.com/full/413873/0/?nc=user