IC 1871, Detail in the Soul Nebula in BiColor HOO (Madratter)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1871

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IC 1871, Detail in the Soul Nebula in BiColor HOO

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IC 1871, Detail in the Soul Nebula in BiColor HOO

This is a Bicolor version that assigned Ha to Red, and O3 to Green and Blue. The O3 data was quite faint despite the 30m subs.

Version B has 5 hours of additional O3 data added in the form of 1 hour subs binned 1x1. This is the first time I have attempted 1 hour subs and I'm pleased with how it turned out. In addition, I have redone the Ha data that was used as the basis both of the red channel and the luminosity channel. StarTools as well as Photoshop were used for the noise reduction instead of just Photoshop in version A.

Version C is an experiment mixing some of the Ha into the green channel with the O III. So luminosity = Ha, red = Ha, green = .3 Ha + O III, blue = O III. Adam Jaffe gave me the idea with an assist from Josh Smith.

Version D is another H(HO)O combination, this time experimenting with how to control the halos that developed in version C.

Original
Final
B
C
D

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Status	Advanced success
Started	...
PixInsight job	6MGENCTM1MYLR777K8Q312WURBG3G2ZI
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	02h57m27s.234
RA (top/left)	02h54m01s.854
RA (top/right)	03h00m52s.706
RA (bottom/right)	03h00m56s.715
RA (bottom/left)	02h53m57s.611

Dec (center)	+60°38′21″.55
Dec (top/left)	+60°18′58″.46
Dec (top/right)	+60°18′59″.15
Dec (bottom/right)	+60°57′24″.43
Dec (bottom/left)	+60°57′24″.10

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IC 1871, Detail in the Soul Nebula in BiColor HOO

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