IC 443 - Jellyfish nebula (Victor Van Puyenbroeck)

Celestial hemisphere: Northern · Constellation: Gemini (Gem) · Contains: IC 443 · IC 444 · The star Propus (ηGem)

IC 443 - Jellyfish nebula, Victor Van Puyenbroeck

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IC 443 - Jellyfish nebula

Link: https://astrovirusblog.wordpress.com/2018/02/18/jellyfish-nebula/

Powered byPixInsight

IC 443 - Jellyfish nebula

Link: https://astrovirusblog.wordpress.com/2018/02/18/jellyfish-nebula/

The Jellyfish nebula (IC 443): pure chaos.

It consists of gas and debris expelled during the super nova explosion of a massive star. This bubble-shaped supernova remnant in the constellation Gemini resembles a jellyfish, with intricate tentacles dangling below. The top right of the frame is filled with diffuse emissions from a different nebula, Sh2-249.

Also decided to shoot some RGB frames near the end of the night.

The color in Rev. B is (Ha-R)GB, with Ha as luminance.

Update 25/02/2018:

I had another clear night this week, and acquired one hour of OIII and one hour SII data.

The colors in Rev. C are tonemapped SII, Ha and OIII channels (Hubble palette), with Ha as luminance.

UPDATE 30/12/2018: Reprocessed with a new workflow to bring out more OIII. The background is pretty ugly because I had to use much more noise reduction on the extremely stretched OIII and SII channels.

Original
B
C
E
Final
F

B

Description: HaRGB version

Uploaded: ...

C

Description: SHO tonemap with Ha as luminance

Uploaded: ...

E

Description: Trying out a new processing workflow: pure SHO combination and much stronger stretch on the OIII and SII data. No tone mapping. Downsampled 50% to improve SNR.

Uploaded: ...

F

Description: Ha-SHO with RGB stars. Updated tone mapping workflow (2019), compare to Rev. C.

Uploaded: ...

Cloudy Nights
ZWO ASI1600MM/QHY163M
Imaged with APT
Astrophotographers of Belgium
Beginners AP
Narrowband imaging

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