Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  56 Cyg  ·  57 Cyg  ·  60 Cyg  ·  62 ksi Cyg  ·  B349  ·  B353  ·  B355  ·  IC 5070  ·  IC5070  ·  NGC 6989  ·  NGC 6997  ·  NGC 7000  ·  NGC6996  ·  NGC6997  ·  NGC7000  ·  North America Nebula  ·  North America nebula  ·  Pelican Nebula  ·  Pelican nebula  ·  Sh2-117  ·  The star 56Cyg  ·  The star 57Cyg  ·  The star 60Cyg  ·  The star ξCyg
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The Mushroom Cloud of Cygnus, 


            Kevin Morefield
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The Mushroom Cloud of Cygnus

Imaging telescopes or lenses: Takahashi FSQ 106 EDX4

Imaging cameras: QHYCCD QHY600M

Mounts: Paramount MyT

Guiding telescopes or lenses: Takahashi FSQ 106 EDX4

Guiding cameras: Starlight Express UltraStar Mono

Software: CCDWare CCDStack 2  ·  CCDWare CCDAutoPilot 5  ·  Adobe Photoship CC  ·  PixInsight

Filters: Chroma Ha 5nm  ·  Chroma OIII 3nm  ·  Chroma SII 5nm

Dates:Aug. 2, 2020

Chroma Ha 5nm: 38x600" (gain: -56.00) -10C bin 1x1
Chroma OIII 3nm: 40x600" (gain: 56.00) -10C bin 1x1
Chroma SII 5nm: 60x600" (gain: 56.00) -10C bin 1x1

Integration: 23.0 hours

Darks: ~8

Flats: ~15

Bias: ~12

Avg. Moon age: 13.62 days

Avg. Moon phase: 98.53%

Bortle Dark-Sky Scale: 7.00

Astrometry.net job: 3733283

RA center: 20h 56' 44"

DEC center: +44° 12' 3"

Pixel scale: 1.458 arcsec/pixel

Orientation: 144.114 degrees

Field radius: 2.186 degrees

Resolution: 8799x6260

Locations: Central Portland Oregon, Portland, Oregon, United States

Data source: Backyard


I am not exactly sure what to call this. The focus for me is on the dark nebula so the Mushroom Cloud seemed right. But maybe the Dirty Pond or the Thunderstorm?

Of course this is the North America Nebula and the Pelican, but my goal was for it not to appear as the traditional continental outline. Instead I wanted to bring out detail to the "oceans" areas. And then there is that third bright emission area that balances the Pelican and Wall. That surprised me.

This is all backyard data from the city of Portland Oregon. At latitude 45 North, Cygnus is well placed for my peak-a-boo sky view. The FOV is not cropped much from the original QHY600M+FSQ106 data.

I mixed the SHO color channels in PI's Pixelmath. I just kept trying different combo's till something clicked. I failed to note the final but it was a variant on SHO. Color was further adjusted in PS.

Starnet++ was used to identify the star locations and PS content aware fill used to replace them. After high pass and unsharp mask filters, stars were added back.



    The Mushroom Cloud of Cygnus, 


            Kevin Morefield
    The Mushroom Cloud of Cygnus, 


            Kevin Morefield
  • Final
    The Mushroom Cloud of Cygnus, 


            Kevin Morefield

Sky plot

Sky plot


The Mushroom Cloud of Cygnus, 


            Kevin Morefield