The Betta Fish Nebula (Brian Boyle)

Celestial hemisphere: Southern · Constellation: Centaurus (Cen)

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The Betta Fish Nebula

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The Betta Fish Nebula

Recent wonderful images of this nebula by @Marco Lorenzi and @Andrew Murrell inspired to have a crack at this, lesser well-known of the Southern Milky May Menagerie.

Known as The Betta Fish nebula, this DSO is a fragment of a 14,000 year old supernova remnant G296.5+10 or ESO 217-25. Other fragments are visible in the large field image by @Marco Lorenzi but I decided to use my RC12 to focus on perhaps the most intricate and extensive part of the SNR.

I also attempted to replicate - as far as possible - the Betta Fish "look" with this tropical fish swimming towards the left, trailing a long diaphanous fin. Given the intergration, I was also able to reproduce the three faint extensions to the [OIII] emission [in a trident shape] ahead of this trailing fin. The SNR fragment is also bathed in faint Halpha and OIII emission , with numerous smll fragments of the SNR visible through their [OIII] emission in a large field view [Version B].

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New Zealand Astrophotography
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Status	Advanced success
Started	...
Astrometry.net job	9624389
PixInsight job	5XJPKSIPHEB0AMQY7PKC1EVTL8SBS1LX
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h07m56s.629
RA (top/left)	12h10m20s.343
RA (top/right)	12h09m39s.456
RA (bottom/right)	12h05m34s.260
RA (bottom/left)	12h06m12s.567

Dec (center)	-51°54′10″.98
Dec (top/left)	-52°02′10″.78
Dec (top/right)	-51°36′51″.34
Dec (bottom/right)	-51°46′00″.71
Dec (bottom/left)	-52°11′24″.62

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