California Nebula - 135mm - DSLR (Euripides)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: 11.63 · 13.56 · 143 Adria · 250 Bettina · 46 ksi Per · 49 Per · 50 Per · California Nebula · IC 2003 · IC 2005 · IC 2027 · Menkib · NGC 1499 · PK161-14.1 · Perseus · Sh2-220 · The star 50Per · The star ξPer · VdB24

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California Nebula - 135mm - DSLR

Powered byPixInsight

California Nebula - 135mm - DSLR

This time I've tried something different. I've used Astropixelprocessor to stack my images and I've ended up with 3 final FITS :

1 - Ha filter

2 - Extract Ha from Triband

3 - Extract Oii from Triband

After cropping and removing light pollution on each file, I've moved on to Pixinsight.

In Pixinsight I've followed the same steps on each file before combining them:

- DBE

- ez Decon

- ez Denoise

- MaskedStretch

I've set the files as:

Ha = Ha

Extract Ha = Sii

Extract Oiii = Oiii

and used a formula from "thecoldestnights.com" to combine them:

Sii/Ha/Oiii :

R = (Oiii^~Oiii)*Sii + ~(Oiii^~Oiii)*Ha

G = ((Oiii*Ha)^~(Oiii*Ha))*Ha + ~((Oiii*Ha)^~(Oiii*Ha))*Oiii

B = Oiii

I've ended up with minor tweaks and a run of ez StarReduction with Adam's method.

Please feel free to share your thoughts !

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Status	Advanced success
Started	...
Astrometry.net job	4120708
PixInsight job	II3FY3ZOIJZNLD54M7HUS1Y575GVXDJD
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	04h01m39s.67
RA (top/left)	03h48m43s.33
RA (top/right)	03h49m22s.65
RA (bottom/right)	04h13m40s.62
RA (bottom/left)	04h14m54s.93

Dec (center)	+36°11′15″.2
Dec (top/left)	+39°09′03″.0
Dec (top/right)	+33°11′08″.2
Dec (bottom/right)	+33°07′57″.0
Dec (bottom/left)	+39°06′05″.7

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California Nebula - 135mm - DSLR

California Nebula - 135mm - DSLR

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California Nebula - 135mm - DSLR

California Nebula - 135mm - DSLR

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