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DWB 111 - Propeller Nebula in the Hubble Palette, 


            Douglas J Struble
DWB 111 - Propeller Nebula in the Hubble Palette

DWB 111 - Propeller Nebula in the Hubble Palette

Technical card

Resolution: 2156x1730

Dates:Oct. 22, 2018Oct. 23, 2018Oct. 25, 2018Oct. 29, 2018Nov. 3, 2018

Astrodon Ha 5nm: 82x240" (gain: 139.00) -20C bin 1x1
Astrodon Ha 5nm: 125x120" (gain: 200.00) -20C bin 1x1
Astrodon OIII 3nm: 83x240" (gain: 75.00) -20C bin 1x1
Astrodon SII 3nm: 90x240" (gain: 139.00) -20C bin 1x1
Astrodon SII 3nm: 123x120" (gain: 200.00) -20C bin 1x1

Integration: 25.3 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 17.33 days

Avg. Moon phase: 77.33%

Bortle Dark-Sky Scale: 6.20 job: 2477332

RA center: 304.012 degrees

DEC center: 43.643 degrees

Pixel scale: 1.011 arcsec/pixel

Orientation: 267.718 degrees

Field radius: 0.388 degrees

Locations: Backyard Red Zone Observatory, Taylor, MI, Michigan, United States

Data source: Backyard


I combined data from my newer 12" GSO f/4 Truss Newtonian with data from my friend Chuck's data using an Explore Scientific 127mm at f/7.5.

DWB 111, also known as the Propeller Nebula is a hydrogen-alpha emission nebula in Cygnus. The propeller shape is actually a small portion of a much larger emission nebula, which can be seen as faint red hydrogen-alpha nebulosity throughout the image frame. The distance to the nebula is not known.



Douglas J Struble
License: None (All rights reserved)

Sky plot

Sky plot


DWB 111 - Propeller Nebula in the Hubble Palette, 


            Douglas J Struble