Sh2 119
Subs (11hrs 57m)
Panel 1
Ha 43 frames 180s 2hrs 09m
Oiii 43 frames 180s 2hrs 09m
Sii 47 frames 180s 2hrs 21m
Panel 2
Ha 42 frames 180s 2hrs 06m
Oiii 36 frames 180s 1hrs 48m
Sii 28 frames 180s 1hrs 24m
Pixinsight
Blur Ext
Graxpert
Mosaic By Coordinates
DNA Linear fit
Save files as XISF
Gradient Merge Mosaic
LRGB Combination
Curves and Masks
HDRMultiscale transform
Dark Structure enhance
Local Histogram Transformation
Stars
SetiAstro NB to RGB Stars Script
Add stars back
Lightroom
Point colour to reduce purple in background down
Luminance and colour noise reduction
Small texture and clarity adjustment
Info
The Clamshell Nebula, also known as Sharpless 119 (Sh2-119), is an emission nebula located in the constellation Cygnus. It's roughly 2,200 light-years away. Sh2-119 is often overlooked because it's near the brighter North American and Pelican Nebulae. The nebula is shaped by the powerful stellar winds and ultraviolet radiation from the supergiant star 68 Cygni. Sh2-119 is an active star-forming region, with ongoing processes of stellar birth and evolution.
greg.lynes
