Hi, I ordered a qhy268m monochrome and LRGB Baader set
I'd also like to buy a narrowband h-alpha filter, Baader as well
1. what nm would you suggest? 3.5nm - 7nm - 35nm?
2. can I combine h-alpha with RGB?
That also depends on your optics. What scope do you have? At F3 or faster you need specialised high speed filters. I always found my Baader 7nm ha to have nice images. Yes, there were some halos, but that doesn't justify spending that huge amount of money for chroma/Astrodon ones. Not until I have more impotent things like an auto focuser haha.
Same goes for LRGB. I'd rather have a halo on a large star than spend the equivalent of my telescope on lrgbsho filters.
It's a decision between money and quality, as always.
And yeah there are many ways to combine h-alpha and rgb