[pmrid (Peter)]

I've got a nice 18MP Canon EOS1200D currently having a Baader mod done. (Remove LPF2 and replace with a Baader filter but keeping LPF1). I also have an Astronomik 6nm Ha filter (clip-in variety) suited to this camera.

It may turn out to be a bit of a dud experiment but I'm curious to learn how well (or not) one can combine the two. I understand exposure times will be lengthened considerably with the Ha filter in place but my question (asked entirely out of ignorance I assure you all) is what the impact is on the Bayer matrix - are the green/blue channels essentially neutered?

And how does one get a monochrome Ha image out of this combination?