IC1396 "Elephant's Trunk"

 Posted: Aug 23rd, 2026
Show astrometry on hover
NGC
IC
HD
Technical Info
Telescope/Lens: Samyang 135 mm. f/2 ED
Camera: ZWO ASI 533MC Pro
Mount: Sky-Watcher Star Adventurer GTi
Guide Scope: svbony sv165
Guide Camera: zwo asi662mc
Software: Siril,pixinsight,PS
Accessories: asiair mini
Exposure:
51 x 300" ISO/Gain: 100 - LAIDA dual band Ha OIII 7нм
Green, Bortle 4 zone:
 Kichmengskiy Gorodok Vologodskaya Oblast, Russia
4 h 15 m
14
Resolution: 2960x2960 px
Scale: 2323 KB
I'm continuing to learn processing. This time I stacked in Siril with separate hydrogen and oxygen channel extraction, then in PixInsight I separated the stars, stretched, cleaned up the noise as best I could, and using pixel math combined the channels as R(Ha) G((Ha+OIII)/2) B(OIII). The star channels were combined using the same formula, then I overlaid the stars on the nebula without changing the colors, only adding a bit of saturation. I sharpened the stars as best I could. If anyone knows how to get good-looking stars without paid plugins, I'd appreciate any information.
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