Jellyfish Nebula IC443 mosaic (Barry Wilson)

Celestial hemisphere: Northern · Constellation: Gemini (Gem) · Contains: 10 Gem · 11 Gem · 12 Gem · 13 mu. Gem · 7 eta Gem · IC 443 · IC 444 · Part of the constellation Gemini (Gem) · Sh2-248 · Sh2-249 · Tejat Posterior · Tejat Prior · The star Propus (ηGem) · The star μGem

Image of the day 03/12/2019

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Jellyfish Nebula IC443 mosaic

Link: https://barrywilson.smugmug.com/

Image of the day 03/12/2019

Powered byPixInsight

Jellyfish Nebula IC443 mosaic

Link: https://barrywilson.smugmug.com/

A two pane mosaic of this supernova remnant and it spectacular shells of expanding gases and its associated emission nebula Sharpless 249. This is the second process, however initially I chose a classic Hubble Pallete with its orange-yellow hues. It was a great image but I felt I wanted more of a contrast between all of the interacting gases across the frame.

After some experimentation I modified the Blue channel mapping (Ha x OIII)xOIII and after some Colour Mask work I ended with the Jellyfish itself rendered with a redder hue that gave a marked contrast to Sh249 and also revealed the structure of the narrow neck of accelerating remnant gases. Of course processing Mu and Eta Geminorum was a challenge!

Captured through January and into early Febraury. I have dated the image for today's reprocess.

Data acquisition: Barry Wilson & Steve Milne

Processing: Barry Wilson

Deep Sky Mosaics
Entre Encinas y Estrellas (e-EyE)
Narrowband imaging

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Status	Advanced success
Started	...
Astrometry.net job	2559576
PixInsight job	9TNMUYFMSG0RTPCOSQH54DNREIV5GZA0
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	06h19m29s.10
RA (top/left)	06h25m05s.45
RA (top/right)	06h25m01s.43
RA (bottom/right)	06h13m48s.25
RA (bottom/left)	06h14m01s.38

Dec (center)	+22°46′39″.4
Dec (top/left)	+21°51′24″.5
Dec (top/right)	+23°43′53″.9
Dec (bottom/right)	+23°41′10″.1
Dec (bottom/left)	+21°48′41″.7

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Image of the day 03/12/2019

Jellyfish Nebula IC443 mosaic

Image of the day 03/12/2019

Jellyfish Nebula IC443 mosaic

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Image of the day 03/12/2019

Jellyfish Nebula IC443 mosaic

Image of the day 03/12/2019

Jellyfish Nebula IC443 mosaic

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