Cygnus area - HaRGB

I finally managed to get H-Alpha narrowband data for both Luminance and Red channels. I had Green and Blue channels from my previous shot.

Green and Blue : 21x4mn subs, darks, flats, bias using CLS filter

Luminance and Red : 21x4mn subs, darks, flats, bias using H-Alpha 12nm filter.

Canon 7D Astrodon Inside

Lens : Canon EF 28mm f1.8 @ f4.0

ISO 800

Astrotrac unguided

Stacked in DSS, processed in Photoshop.

 

I had not figured out before I did it how tough it was to focus with the H-Alpha filter and such a wide-angle lens... Stars were nearly invisible...

Done