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Contains:  NGC 6997, Pelican nebula, IC 5070, The star 57Cyg, The star 56Cyg
Getting plate-solving status, please wait...
IC5070 - Pelican  - HOhOh, 





    
        

            Axel
IC5070 - Pelican  - HOhOh

IC5070 - Pelican - HOhOh

Technical card

Resolution: 4532x3353

Dates:June 30, 2019July 5, 2019

Frames:
ZWO HAlpha 7nm: 250x180" (gain: 139.00) -20C bin 1x1
ZWO O-III 7nm: 221x180" (gain: 139.00) -20C bin 1x1

Integration: 23.6 hours

Avg. Moon age: 15.04 days

Avg. Moon phase: 8.46%

Bortle Dark-Sky Scale: 8.00

Astrometry.net job: 2823793

RA center: 312.919 degrees

DEC center: 44.014 degrees

Pixel scale: 1.499 arcsec/pixel

Orientation: 358.765 degrees

Field radius: 1.173 degrees

Data source: Backyard

Description

The Pelican is an iconic target but hard to process (just look at how few IOTD of this image exists on ABIN while there are probably 20+ pages of various versions).

After 3 weeks of head scratching and about 10 versions, I almost gave up but it was not reasonable to throw almost 24h of integration.

Color balance is hard so I opted for an overall compromise where I would get blue tones in the left part of the pelican, purple in the center, reds in the right part, pinks in the head and browns in the upperleft dusts and bottom center right of the body (see various image rev)

As always you are tempted to go overboard in terms of color saturation, contrasts , decon... Not sure I mastered it but now I can sleep peacefully and let this epic bird fly away.
Unfortunately the ZWO O3 filter is spitting out nasty halos that are very hard to process around large stars.
Deconvolution was very effective and recovered tons of details.
I also made the choice not to leave the image at it's native scale and denoising was made only in the linear stage with TGV.

Will revisit it next year by adding SII and we'll see what comes out of it.

Thanks to Cyber (Victor) for always being supportive and to Jon Rista for his initial feedback.

Comments

Author

+Rajang_is_innocent+
Axel
License: None (All rights reserved)
1141
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Revisions

  • Final
    IC5070 - Pelican  - HOhOh, 





    
        

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    Original
  • IC5070 - Pelican  - HOhOh, 





    
        

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    B
  • IC5070 - Pelican  - HOhOh, 





    
        

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    C
  • IC5070 - Pelican  - HOhOh, 





    
        

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    D
  • IC5070 - Pelican  - HOhOh, 





    
        

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    E
  • IC5070 - Pelican  - HOhOh, 





    
        

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    F

B

Blue part

C

purple part

D

Red part

E

Brown part

F

Pink part

Sky plot

Sky plot

Histogram

IC5070 - Pelican  - HOhOh, 





    
        

            Axel