NGC6888

 Posted: Feb 3rd, 2026
Technical Info
Telescope/Lens: Sharpstar 76 edph 4,5
Camera: Zwo 1600mm
Mount: Heq 5 PRO
Guide Scope: OAG
Guide Camera: ZWO 220mm
Software: Pixinsight
Exposure:
60 x 60" ISO/Gain: 139 - R
60 x 60" ISO/Gain: 139 - G
41 x 60" ISO/Gain: 139 - B
30 x 180" ISO/Gain: 139 - H
28 x 180" ISO/Gain: 139 - O
Yellow, Bortle 5 zone:
 Mozyr, Belarus
 Aug 9th, 2025
5 h 35 m
54
Resolution: 4005x2617 px
Scale: 9888 KB
The Crescent Nebula, also known as the Brain Nebula or commonly as NGC 6888 in the constellation CYGNUS. Surprisingly, the result is actually decent. This is what happens when you use proper scripts for blending narrowband channels with RGB, instead of inventing various formulas in PixelMath that produce eye-searing results.

The shooting date is listed as August, but in reality, the different channels were captured in different months. And due to a camera rotation, about a third of the frame had to be cropped...
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Comments

The shell turned out excellently, my respects.
Yesterday, at 14:09 Reply
Robert Nik Replied to Poppy8micro
Thank you! It's a shame it all didn't fit in the final frame. I had to crop out a good third of the shot...
Yesterday, at 20:39 Reply
Poppy8micro Replied to Robert Nik
You know, sometimes it's better to crop—there's not much to see there anyway. And when the central object is as small as a pea, that's not great either, especially since your resolution allows for more.
Yesterday, at 20:41 Reply

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