I accidentally dida ful run of H-a last night, WITH the LP filter in place.
When I apply the H-a in the correct way to the LRGB (to make an Ha-L(RHa)B), I get cyan stars caused by the LP filter in the H-a subs. I have desaturated the HaR in PS, I have removed the blue channel from the HaR combined image before applying, I have left it 100% mono, but I still get cyan in the stars. Nothing seems to cure it, and balancing the resultant after to remove the blue also makes it look wrong.
Any ideas, BESIDES reshooting all the Ha subs again WITHOUT the LP filter
