This is the rich nebulosity in Cygnus captured in the narrow red light of hydrogen-alpha emission and rendered as a monochrome image. At lower left is the North America Nebula region, NGC 7000, and at upper right is the complex around Gamma Cygni, called IC 1318. At far right is the Crescent Nebula, NGC 6888. The bright star Deneb is left of centre, though dimmed somewhat as this is a blue star and so appears less prominent in red light. This is with the Canon 135mm L-series telephoto lens wide open at f/2 and with the red sensitive Canon EOS Ra camera, for a stack of 11 x 4-minute tracked but unguided exposures at ISO 3200, so fairly long and at a high ISO despite the fast aperture, due to the dense filter. The filter is the 12nm clip-in Astronomik H-Alpha. Processing was in part using luminosity masks created by Lumenzia extension panel in Photoshop. This was on June 9-10, 2020 with the sky lit by moonlight from the low waning gibbous Moon and by perpetual twilight, though the Milky Way was visible.
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.
Emission nebulas in northern and central Cygnus, including the North America Nebula (NGC 7000) at lower left and the Gamma Cygni complex (IC 1318) at upper right. Deneb is the bright star at left, while Gamma Cygni itself is at upper right. However, the image works well turned 90° to portrait with Deneb at top. This is a stack of 8 x 2-minute exposures with the 200mm lens at f/2.8, and filter-modified Canon 5D MkII at ISO 1600, taken from home on May 30, 2017 as part of testing the Star Adventurer Mini tracker. All exposures tracked but not guided.
