I have been waiting too long for my Sii filter to arrive so i made do with some random combination of Ha and Oiii using the AP sho pallete. Also a more standard false RGBHOO with two filters for comparison.
Finally have the dithering working again in Ecos on a Rock 64 to remove some of the FPN but it is still there and perhaps I need to be more aggressive than just a few pixels.
The right time now in the cloudy weather to try different combinations.
Not sure when the Baader will be shipping filters .
.I have had one win . My daughter sent me a 4 euro part I could not buy anywhere else with some christmas goodies from Europe Arrived on Friday. Better than the 50 euro shipping they wanted to charge.