Sharpless 308 The Dolphin Nebula in Canis Major in Narrow Band and RGB (Ian Parr)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: 16 CMa) · The star Udra (ο1 CMa

Sharpless 308 The Dolphin Nebula in Canis Major in Narrow Band and RGB, Ian Parr

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Sharpless 308 The Dolphin Nebula in Canis Major in Narrow Band and RGB

Powered byPixInsight

Sharpless 308 The Dolphin Nebula in Canis Major in Narrow Band and RGB

Sharpless 308 (Sh 2-308), commonly known as the Dolphin-Head Nebula, is an H II region located near the center of the constellation Canis Major, composed of ionised hydrogen.
The nebula is about 4,530 light-years away and approximately 60 light-years across at its widest point. It has an apparent magnitude of 6.91 and about 35' x +35' arcminutes in size. The nebula's bubble surrounds a Wolf–Rayet star named EZ Canis Majoris which is in the brief, pre-supernova phase of its stellar evolution. When it goes bang this will all be past tense.

This is my first go at combining Narrow Band and RGB using 13 hours of 30 minute exposures in HA OIII and SII combined with 4.3 hours of Red Green and Blue 5 minute exposures using the NBRGBCombination tool in Pixinsight. NOW I think it's time to move on as this took me a month to complete with the unco-operative weather but some lucky nights of very good seeing.

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Basic success
Started	...
Astrometry.net job	7290836
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Sharpless 308 The Dolphin Nebula in Canis Major in Narrow Band and RGB

Sharpless 308 The Dolphin Nebula in Canis Major in Narrow Band and RGB

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Sharpless 308 The Dolphin Nebula in Canis Major in Narrow Band and RGB

Sharpless 308 The Dolphin Nebula in Canis Major in Narrow Band and RGB

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