IC405 in H-SHO-RGB stars (Nicola Beltraminelli)

IC405 in H-SHO-RGB stars

IC405 is an absolutely amazing nebula with strong emissions in Ha and SII, while is very dim in OIII. It is definitively among my preferred ones. The structure is very complex with beautiful filaments and loads of great astrophotgraphers already brillantly illustrated how rich is this nebula.
With this version, I tried to take benefit of the continuous progress in the electronics and processing, and tried to push for 2 objectives:
1. Highlight the differential SII and Ha emissions in the nebula
2. Try to resolve the OIII emission, which is usually only a diffuse signal
Thanks to a short window of reasonably good weather and the long european nights I could successfully shoot to achieve the classical Ha, SII, OIII and RGB layers. I was however not very satisfied to achieve only 65 subs of 300s for Ha, as usually I go for significantly more. I therefore shooted in Ha for 2 additional nights to achieve a total of 14h exposure, but unfortunately full moon, clouds and wind did significantly disturb my subs. So, despite many trials to rescue some of my Ha subs, the end result was inferior to my initial 65 x 300s obtained under optimal conditions. Apart from this little frustration, I was very happy to see that one can easily play with the Ha, SII and OIII layers to achieve a very colorful picture that captured the differential emissions of SII and Ha. I was also quite happy to see that indeed OIII can be resolved with structures although to achieve this I had to play very hard with the contrast, thus strong denoising could not be avoided.
I hope that you will enjoy this new version of the Flame of the Universe :-)

Original
Final
B

B

Description: Corrected the dark red clipping :-)

Uploaded: ...

Narrowband imaging
Duo-band, Tri-band, and Quad-band Imaging
ASI 6200 MM Pro
Fine Art Astrophotography
Processed with Photoshop
Astrophotographes (France)

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Status	Advanced success
Started	...
Astrometry.net job	6591482
PixInsight job	TASG5A8G2BEELBW5PA77UMN0U6ILHRT3
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h16m17s.35
RA (top/left)	05h20m53s.30
RA (top/right)	05h18m44s.74
RA (bottom/right)	05h11m35s.19
RA (bottom/left)	05h13m53s.95

Dec (center)	+33°52′57″.1
Dec (top/left)	+32°55′41″.1
Dec (top/right)	+35°08′03″.3
Dec (bottom/right)	+34°49′23″.2
Dec (bottom/left)	+32°37′39″.1

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