I'm not ready for the big boys forum, so here is M8 reworked... it needs more data, flats etc... I think it has become a little saturated, but I didn't clip the BP this time - I did check that.
More data is needed, but the filter works and there is considerably more signal over an hour compared to 2 hours without.
Those little red wavelets (to give them a name) throughout - not sure what that is...
but I think, more nebula breaking through?
updated version