You might like to get rid of the great cast from the UHC filter though, there isn't much green in space. Reducing the green level and a slight amount in the blue should do the tick.
thanks Wayne... I agree with you re Jo's reprocess... I'll try to replicate it on my .tiff version when I get home... NGC3324 was an added bonus, I captured part of it on my initial test frames and decided to tweak the field of view to include it... considering the light pollution around my back yard I'm quite pleased with the results so far... I'm looking forward to taking a trip out to darker skies and having another go at it when I have the time and weather on my side...