Cocoon Nebula (IC 5146 )


IC 5146 is a young star nursery in constellation Cygnus. It is about 2300 light years away and is illuminate by a very young star. Dark molecular clouds make it look like a fireball with a dark smoky tail …

Another color version here.


This object is a candidate for a re-process. I am not too happy with the result. These are two different approaches, both not ideally handled. The processing was a bit chaotic. Only the latest processing (first picture) is described below.

Acquisition Details

Scope: Borg 90FL/500 with 1.08x Flattener
Filter: No Filter
Camera: ZWO ASI 2600MC Pro
Mount: Skywatcher HEQ5 Pro
Guiding Scope: MiniBorg 50
Guiding Camera: ZWO ASI 290MM
Guiding Software: PHD2
Acquisition Software: APT
Light Frames: 124x180sec in two nights
Flats, Dark Flats, Bias, Darks
Camera settings: Gain 100, Offset 20
Bortle 4-5, no moon
Acquisition Dates: September 01 and 02, 2021


Stacking: DSS
Imaging: PixInsight
Denoise: Topaz AI Denoise