Sh2-223 & Sh2-224 in Auriga (Göran Nilsson)

Celestial hemisphere: Northern · Constellation: Auriga (Aur) · Contains: 20 rho Aur · LBN 768 · LBN 769 · Sh2-223 · Sh2-224 · The star ρAur

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Sh2-223 & Sh2-224 in Auriga

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Sh2-223 & Sh2-224 in Auriga

These two quite faint objects from the Sharpless catalogue were once thought to both be supernova remants (planetary nebulae) but now only Sh2-224 (the one to the left) is recognized as a supernova remnant, with the typical blue Oiii mixed with Ha emission. Sh2-223 does not contain any detecatble (Oiii) and is now thought to be a Ha emitting nebula energized by the star BD+41 1144. For those that want to read more about thes objects a good start is, as allways, to read Gary Imm's description of his rendention of these objects (https://www.astrobin.com/380492/F/), where also BD+41 1144 is pointed out.

To me Sh2-224 looks like some kind of flying creature. or rather gliding, coming in for landing on Sh2-223.

Processed in PI and PS. After some initial stretches I made a starless image using the Star Xterminator filter before stars were brought back. This greatly helped to suppress the starfield that otherwise can easily overwhelm these quite faint nebulae.

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Description: Brighter with curve adjustment

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Status	Advanced success
Started	...
Astrometry.net job	5268447
PixInsight job	5TZE6J0BL1ITIYPFTAEM18DAH5SZYGHM
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h22m03s.43
RA (top/left)	05h31m11s.24
RA (top/right)	05h12m31s.25
RA (bottom/right)	05h13m16s.95
RA (bottom/left)	05h31m15s.17

Dec (center)	+42°20′32″.1
Dec (top/left)	+43°36′04″.8
Dec (top/right)	+43°30′05″.3
Dec (bottom/right)	+41°02′13″.8
Dec (bottom/left)	+41°07′26″.0

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Sh2-223 & Sh2-224 in Auriga

Sh2-223 & Sh2-224 in Auriga

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Sh2-223 & Sh2-224 in Auriga

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