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Contains:  37 gam Cyg, NGC 6910, NGC6910, Sadr, Sh2-108, The star Sadr (γCyg)
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Sadr, the heart of cygnus, 


            Christoph Lichtblau
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Sadr, the heart of cygnus

Technical card

Dates:July 28, 2020July 29, 2020July 30, 2020

Baader Blue 2": 25x80" (gain: 200.00) bin 1x1
Baader Green 2" Filter: 25x80" (gain: 200.00) bin 1x1
Baader H alpha 7nm: 50x300" (gain: 250.00) bin 1x1
Baader O III 8,5nm: 55x300" (gain: 250.00) bin 1x1
Baader Red 2": 25x80" (gain: 200.00) bin 1x1
Baader S II 7nm: 45x300" (gain: 250.00) bin 1x1

Integration: 14.2 hours

Darks: ~30

Flats: ~30

Avg. Moon age: 9.49 days

Avg. Moon phase: 71.27%

Bortle Dark-Sky Scale: 7.00 job: 3719983

RA center: 20h 22' 10"

DEC center: +40° 15' 24"

Pixel scale: 0.653 arcsec/pixel

Orientation: 137.689 degrees

Field radius: 0.931 degrees

Resolution: 6055x8267

Locations: Backyard, Eschborn, Hessen, Germany

Data source: Backyard


The star Sadr in the middle of cygnus is a bright star easy visible. What you can not see is the stunning nebulosity around Sadr, which I want to make visible with this pic. Challenging is to get the brightness of Sadr under control without loosing its dominance. For star colors and because I do not like purple stars, I added some RGB frames. Not a difficult target, but a nice one I think.



Christoph Lichtblau
License: None (All rights reserved)


  • Sadr, the heart of cygnus, 


            Christoph Lichtblau
  • Final
    Sadr, the heart of cygnus, 


            Christoph Lichtblau

Sky plot

Sky plot


Sadr, the heart of cygnus, 


            Christoph Lichtblau