DWB 111 & LDN 909

Image Description and Details : Commonly known as the propeller nebula the ‘propeller’ shape actually consists of two catalogued parts: DWB 111 & DWB 119.
The DWB catalog was compiled by H. R. Dickel, H. Wendker and J. H. Bieritz cataloging 193 distinct objects as part of their study of H-alpha emission nebula in the Cygnus X region of the sky.
This is part of a much larger complex known as Simeis 57 in Cygnus, discovered in the early 50’s. The distance to the nebula is not known.
DWB 111 is just a small part on the left of this image. There is another very faint OIII object in the frame & I hope I can add further to the image at a later date. LDN 909 refers to the dark area just right of centre.

Imaging telescope: Takahashi FSQ130ED

Imaging cameras: FLI ML16200

Mounts: Takahashi EM 400 Temma 2

Guiding cameras: QHY CCD QHY 5 II

Focal Extender / Reducer: Tak QE 0.73x

Software: PHD 2, Astro Pixel Processer, PixInsight , Sequence Generator Pro SGP

Filters: Astrodon SII, Ha, OIII, + Astrodon RGB

Accessories: ATIK EFW3

Original Resolution: 4416 x 33596

Dates: Jul 18 - Aug 4, 2021

Frames:

Astrodon Ha: 42 x 600"

Astrodon SII: 45 x 600"

Astrodon OIII: 48 x 600"

Astrodon RGB: 3 x 10 x 180"

Integration: 24 Hours.

Copyright: Brendan Kinch