NGC 2359 HOO (Mathieu Guinot)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: LBN 1040 · LBN 1041 · NGC 2359 · Sh2-298

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NGC 2359 HOO

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NGC 2359 HOO

I thought this one deserved it, so i made this HOO version after the SHO one :-)
I used the star colors from the SHO version but only Ha and Oiii filters for the nebula colors.

NGC2359, also known as Thor's helmet, is an emission nebula located in the constellation Canis Major, at a distance of about 15,000 light-years. It is one of the most famous Wolf-Rayet bubble.
Unlike typical emission nebulae, in which young hot O-type stars ionize the gas cloud from which they are formed, much of the gas surrounding the Wolf-Rayet star HD 56925 comes from the star itself. The mechanism for this is similar to the process in which planetary nebulae form. Wolf-Rayet stars represent the last stage in the evolution of massive and super-massive stars (> 20 solar masses), before they explode into a supernova. These stars lose mass at a prodigious rate, losing most of their hydrogen and exposing the very hot stellar core. The gas is ejected at high speed and plows into the surrounding interstellar material, forming the complex knots and shock arcs visible in the photo.

Datasets bought on Telescope Live and taken from november 2020 to march 2021 with CHI-1 (CDK24) and CHI-3 (RC 1000) telescopes at El Sauce Observatory, Chile.

CDK 24 + PL9000 :
Hii : 4x600s + 16x300s
Oiii : 4x600s + 16x300s

RC 1000 + PL16803 :
Hii : 6x600s
Oiii : 6x600s

I have embedded the RC1000 data in the center of the nebula to slightly increase the details (not so much because of seeing, but a little bit, and was anyway limited by the little amount of integration time of both data sets though happy with it!

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Status	Advanced success
Started	...
Astrometry.net job	5422980
PixInsight job	VRJSHGF35GZW8ZV5XX1ZVSA2SHXPLF50
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	07h18m31s.891
RA (top/left)	07h17m33s.491
RA (top/right)	07h17m31s.455
RA (bottom/right)	07h19m30s.383
RA (bottom/left)	07h19m32s.204

Dec (center)	-13°14′14″.50
Dec (top/left)	-13°00′03″.54
Dec (top/right)	-13°27′56″.44
Dec (bottom/right)	-13°28′24″.66
Dec (bottom/left)	-13°00′32″.28

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