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DWB 111 - Propeller Nebula in Ha & SII, 


            Douglas J Struble
DWB 111 - Propeller Nebula in Ha & SII

DWB 111 - Propeller Nebula in Ha & SII

Technical card

Resolution: 4150x3320

Dates:Oct. 25, 2018Oct. 29, 2018

Astrodon Ha 5nm: 125x120" (gain: 200.00) -20C bin 1x1
Astrodon SII 3nm: 123x120" (gain: 200.00) -20C bin 1x1

Integration: 8.3 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 17.68 days

Avg. Moon phase: 86.69%

Bortle Dark-Sky Scale: 6.00 job: 2339759

RA center: 304.041 degrees

DEC center: 43.648 degrees

Pixel scale: 0.648 arcsec/pixel

Orientation: 357.808 degrees

Field radius: 0.478 degrees

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

Data source: Backyard


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 Ha & SII, 


            Douglas J Struble