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Contains:  Crescent nebula, NGC 6888
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NGC 6888  Crescent Nebula, 





    
        

            astromario
NGC 6888  Crescent Nebula

NGC 6888 Crescent Nebula

Technical card

Resolution: 2000x1505

Dates:Oct. 16, 2018

Frames:
Optolong Ha 7nm 36mm: 20x600" bin 1x1
Optolong LRGB 36mm: 36x180" bin 1x1
Optolong O-III 6.5nm 36mm: 12x600" bin 1x1

Integration: 7.1 hours

Darks: ~30

Flats: ~30

Bias: ~50

Avg. Moon age: 7.16 days

Avg. Moon phase: 47.59%

Astrometry.net job: 2316321

RA center: 303.038 degrees

DEC center: 38.351 degrees

Pixel scale: 2.368 arcsec/pixel

Orientation: 181.063 degrees

Field radius: 0.823 degrees

Locations: Rooftop Obeservatory, Premstätten, Steiermark, Austria

Data source: Backyard

Description

This object deserves much more integration time then this version. This was my hardest object when it comes to photoshop. After hours of trying and failing i mixed the ha and R channel and the oiii and B channel with the "lighten" blend mode and used the standard G channel. As luminance i mixed up ha and oiii, also with lighten blend mode. after some more tweaks i came up with this and i think, thats all i can do at the moment with this data. maybe i collect some more hours on it and try it again.

feedback is highly appreciated

Comments

Author

astromario
astromario
License: None (All rights reserved)
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NGC 6888  Crescent Nebula, 





    
        

            astromario