Celestial hemisphere:  Northern  ·  Constellation: Gemini (Gem)  ·  Contains:  7 eta Gem  ·  IC 443  ·  Sh2-248  ·  Tejat Prior  ·  The star Propus (ηGem)
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IC 443, Jellyfish Nebula, 25 Feb 2014 RGB + 10 Dec 2014 Hα, David Dearden
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IC 443, Jellyfish Nebula, 25 Feb 2014 RGB + 10 Dec 2014 Hα

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This image combines Hα data from 10 Dec 2014 with RGB data from 25 Feb 2014. I roughly followed Starizona method 1, but I’m still struggling with blending Hα and RGB. The dimmer stars always come out looking blue with this method, I presume because when the HαR is made the dimmer stars don’t show up, so if the HαR is used for the R channel the dim stars don’t have enough R. I don’t know how to fix this currently. However, this definitely looks a lot better than the RGB alone did.

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IC 443, Jellyfish Nebula, 25 Feb 2014 RGB + 10 Dec 2014 Hα, David Dearden