SH2-224 supernova remnant in HOO with RGB stars (Nicola Beltraminelli)

Celestial hemisphere: Northern · Constellation: Auriga (Aur) · Contains: HD35544 · HD35761 · LBN 769 · Sh2-224

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SH2-224 supernova remnant in HOO with RGB stars

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SH2-224 supernova remnant in HOO with RGB stars

SH2-224, a supernova remnant situated in the constellation of Monoceros, spans an area approximately 25 light-years across. The remnant's complex structure, comprising filaments and shock waves, is believed to have formed from the explosive demise of a massive star between 13000 and 24000 years ago. Emitting radiation across various wavelengths, including X-rays and radio waves, SH2-224 serves as a crucial target for astronomers' observations. Its distance from Earth is estimated to be around 14700 light-years.

This nebula is known to be very faint, thus capturing the details of the nebula is particularly challenging. I therefore shooted with 600s subs in Ha and OIII, so to maximize the SNR. During the processing I tried to highlight the very dim regions of the nebula, and at the same time I adjusted the brightest regions to avoid burning them. It has been a very tough exercise, also because to show the dimmest regions, I had to deal with star halos and of course some gradients (which I corrected according to images taken by other astrophotographers with much larger fields). After many trials, I obtained this version, which is the best I could achieve with my setting.

As usual do not hesitate to provide constructive feedback.

CS,

Nicola

ASI 6200 MM Pro
Processed with Photoshop
Astrophotographes (France)
Narrowband imaging
Sharpless2 Objects
Duo-band, Tri-band, and Quad-band Imaging

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Status	Advanced success
Started	...
Astrometry.net job	9612152
PixInsight job	4ZTIIKSDQ41ZDOTEZD8L5JRFTKT70ROF
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h26m44s.564
RA (top/left)	05h23m59s.285
RA (top/right)	05h24m16s.963
RA (bottom/right)	05h29m26s.153
RA (bottom/left)	05h29m15s.703

Dec (center)	+42°55′42″.62
Dec (top/left)	+43°37′38″.12
Dec (top/right)	+42°11′52″.24
Dec (bottom/right)	+42°13′31″.90
Dec (bottom/left)	+43°39′20″.45

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SH2-224 supernova remnant in HOO with RGB stars

SH2-224 supernova remnant in HOO with RGB stars

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SH2-224 supernova remnant in HOO with RGB stars

SH2-224 supernova remnant in HOO with RGB stars

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