This is very interesting approach Andy and a lovely job, well done on using the lap top on Holidays too
...how did you get away from the W & K's
Oh and good on you for trying to show all three wavelengths too
As you know I am currently hammering this too and although there is heaps of Ha, I note as you have, there is essentially no OIII
so the use of the NII was a good approach, how much of that is there? Given the lack of OIII (I don't have an NII filter) and not thinking an SIIHa version would work that well..? I think I have decided to do an LHaRGB version
My FOV shows the whole feature, and turned 90deg anticlockwise, it resembles the profile of the BFG
Mike