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Contains:  NGC 6914, M 29, NGC 6913, NGC 6910, gamma Cyg nebula, IC 1318, Crescent nebula, NGC 6888, IC 1311, The star 40Cyg, The star Sadr (γCyg), The star 34Cyg
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The entire Sadr nebula complex (Gamma Cygnus, Crescent, Propeller, ...), 


            Sven Hoffmann
The entire Sadr nebula complex (Gamma Cygnus, Crescent, Propeller, ...)

The entire Sadr nebula complex (Gamma Cygnus, Crescent, Propeller, ...)

Technical card

Resolution: 3894x2766

Dates:Sept. 12, 2017Dec. 11, 2017

Baader 7nm Ha: 62x120" (gain: 75.00) -20C bin 1x1
Baader 8.5nm OIII: 12x120" (gain: 75.00) -20C bin 1x1
Baader 8nm SII: 11x120" (gain: 75.00) -20C bin 1x1

Integration: 2.8 hours

Darks: ~16

Flats: ~16

Bias: ~100

Avg. Moon age: 22.30 days

Avg. Moon phase: 48.40%

Bortle Dark-Sky Scale: 5.00

Mean FWHM: 3.00

Temperature: 10.00 job: 1860715

RA center: 304.910 degrees

DEC center: 40.887 degrees

Pixel scale: 6.045 arcsec/pixel

Orientation: 272.145 degrees

Field radius: 4.011 degrees

Data source: Backyard


Hi everyone,

today I want to present to you an image of the entire nebula complex around Sadr in Cygnus. This image was taken with the Samyang 135mm f/2 lens at f/2.8. It contains a multitude of nebulae. Some of the more prominent ones: the Gamma-Cygnus-Nebula, the Crescent Nebula and the Propeller Nebula.

Unfortunately I didn't manage to capture a lot of SII and OIII data. Fortunately the skies aren't going anywhere. I really love the cloudy / whispy structures in this area :)

Since I took his image I finally managed to resolve my tilt issues I had with the lens. So the next ones will be even better :) It turns out that before I had rings for the lens / camera combination I bent the threads of my EOS adapter by testing the lens without any support -facepalm- Well I ordered a new one and now everything is properly tilt free.

Thanks for stopping by and taking a look,



Sven Hoffmann
License: None (All rights reserved)

Sky plot

Sky plot


The entire Sadr nebula complex (Gamma Cygnus, Crescent, Propeller, ...), 


            Sven Hoffmann

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Cloudy Nights