Supernova remnant IC443 (Anders Johannesson)

Celestial hemisphere: Northern · Constellation: Gemini (Gem) · Contains: 7 eta Gem · Gem A · IC 443 · LBN 844 · LDN 1564 · Sh2-248 · Tejat Prior · The star Propus (ηGem)

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Supernova remnant IC443

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Supernova remnant IC443

A beautiful nebula in Gemini just 5000 light years from Earth. I like the details that show up very nicely in narrow band H alpha. Some of them looks like the tentacles of a jellyfish, and thus it is sometimes called the jellyfish nebula. The stars are from 28 minutes of RGB exposures with the same camera and telescope.

It was a bit tricky to process. I wanted to keep as much details as possible in the nebula and still have the stars in color. I tried a, for me, new method of reducing the star size that I think worked quite well. Otherwise the nebula would have drowned in stars. I hope you like it.

ZWO ASI2600MM Pro
"Nordish by nature"

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Status	Advanced success
Started	...
PixInsight job	GGAGIU1V9WZ102OM3E62QKOZQOPYBHUJ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h17m15s.32
RA (top/left)	06h21m16s.38
RA (top/right)	06h17m04s.20
RA (bottom/right)	06h13m14s.19
RA (bottom/left)	06h17m26s.27

Dec (center)	+22°36′07″.3
Dec (top/left)	+22°39′16″.2
Dec (top/right)	+23°31′48″.9
Dec (bottom/right)	+22°32′35″.9
Dec (bottom/left)	+21°40′24″.8

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Supernova remnant IC443

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