SH2-155 (C9) Cave Nebula

[The Thing]

I've redone the last 3 steps of processing, no Dark Structure Enhance or SCNR (green removal). I also reduced the saturation to a more 'natural' level (at least for me). The dust element is now more prominent.




Might have overdone the Dark Structure Enhance script in Pixinsight, but it adds drama
107x240s, Gain 120, Offset 4, Temp -5C

Image date, time and location: 2021-09-01+05, Manche France
Telescope aperture and focal ratio: TS1506 f4 Newtonian with TS-Optics GPU superflat 2" Coma Correktor
Camera and filters used: ZWO ASI294MC Pro, Optolong lEnhance tri-band filter
Processing applied: Pixinsight, Gimp (for those who like puzzles, details ABE_EZdcn_dnse_sftstr_strred_DSE_HT_SCNR50_GIMP)

[RobertM]

"Might have overdone the Dark Structure Enhance script"   It needs to be used with subtlety 

If the dark areas go too black then it's probably overdone.

Robert