I can see the possibilities as well as yet more experimenting with processing 
HA - Baader H-Alpha 35nm .. I went with the 35 because I am using it on a OSC camera and I figured that would make it not quite as inefficient as say a 7nm would be . plus it was $100 cheaper .. which was important if it turned out I was only going to use it once .
Taken over two nights
HA
40x300s @ 300g
30 darks
30 flats
RGB
40x120s @ 300g
30 darks
30 flats
all taken with .63 FR and -10C
processed each stack separately and merged in Photoshop .. had to do some heavy cropping as the images were not that well lined up
I think this came out well enough that I will pursue this from time to time and the cost of the filter was not a waste.
Thanks for looking
