Cygnus Nebulosity and Dark Lanes
A portrait of emission nebulas and dark dust lanes in Cygnus around Deneb, including the North America Nebula NGC 7000 at upper left and the Gamma Cygni or Butterfly Nebula IC 1318 at lower right.
I shot this with a waxing quarter Moon in the sky on November 21, 2020, using the red-sensitive Canon EOS Ra equipped with a clip-in Astronomik 12nm H-a filter to isolate just the deep red Hydrogen-alpha emission line, but resulting in a monochromatic image.
This is a stack of 24 x 3-minutes at ISO 3200 with the 135mm Canon lens wide open at f/2. Star images toward the bottom are aberrated, I think due to the filter being slightly tipped in the camera body.
For artistic effect I added a mild Orton Glow with Luminar 4 and then a blue tint and frame with Nik Collection SilverEFX Pro filter. Some of the tonal stretching was done with luminosity masks created with Lumenzia.