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Contains:  Crescent nebula, NGC 6888
Getting plate-solving status, please wait...
NGC6888 - HOO - Shared Project, 


NGC6888 - HOO - Shared Project

NGC6888 - HOO - Shared Project

Technical card

Resolution: 4564x3404

Dates:June 18, 2019

ZWO HAlpha 7nm: 61x180" -20C bin 1x1
ZWO O-III 7nm: 185x180" -20C bin 1x1

Integration: 12.3 hours

Avg. Moon age: 15.87 days

Avg. Moon phase: 98.63%

Bortle Dark-Sky Scale: 8.00 job: 2899220

RA center: 303.046 degrees

DEC center: 38.352 degrees

Pixel scale: 1.497 arcsec/pixel

Orientation: 90.492 degrees

Field radius: 1.184 degrees

Data source: Backyard


With my friend Victor Van Puyenbroeck we shared data and processed separately the dataset.
Victors version is visible here:

Data capture: Axel and Victor Van Puyenbroeck
Image processing: Axel

Axel :
Paris, France (Bortle 8-9)
EQ6-R + Skywatcher 80ED f/6.4 + ASI1600MM-C + ZWO 7 nm filters
555 minutes OIII
183 minutes Ha
Acquired in June 2018 and June 2019

Victor :
Herent, Belgium (Bortle 7)
EQ6-R, EQ5 + TS 80mm f/4.8 + ASI1600MM-C + ZWO 7 nm filters
530 minutes OIII
520 minutes Ha
30 minutes Blue
20 minutes Green
20 minutes Red
Acquired between 09-Jun-2019 and 22-Jun-2019

Total integration time: 31 hours

Victor opted for a tonemap version whereas I went for a more straight forward approach based on the following blend
R = H
G = H*.35 + O*.65
B=H*.1 + O*.9
The soap bubble is here but less visible than in Victor's image.

Rev B shows side to side images.



License: None (All rights reserved)


  • Final
    NGC6888 - HOO - Shared Project, 


  • NGC6888 - HOO - Shared Project, 




Side to side Axel left Victor right

Sky plot

Sky plot


NGC6888 - HOO - Shared Project,