Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Contains:  Crescent nebula, NGC 6888
Getting plate-solving status, please wait...
NGC 6888  Crescent Nebula, 


NGC 6888  Crescent Nebula

NGC 6888 Crescent Nebula

Technical card

Resolution: 2000x1505

Dates:Oct. 16, 2018

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% 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


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



License: None (All rights reserved)

Sky plot

Sky plot


NGC 6888  Crescent Nebula,