Dolphin Head Nebula, Sharpless 308 (mhtandy)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: 16 CMa) · 16 omi01 CMa · HD49868 · HD49891 · HD49940 · HD50047 · HD50154 · HD50232 · HD50261 · HD50304 · HD50352 · HD50425 · HD50494 · HD50535 · HD50646 · HD50680 · HD50711 · HD50740 · HD50781 · HD50804 · HD50826 · HD50852 · HD50853 · HD50896 · HD50914 · HD50939 · HD51013 · HD51036 · HD51086 · HD51088 · And 33 more.

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Dolphin Head Nebula, Sharpless 308

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Dolphin Head Nebula, Sharpless 308

I was surprised to get this good of an image - seeing conditions were "Poor" on the first night, and intermittent clouds reduced the quality of the subs on the 2nd night (I had to toss out about 1/3 of those). Its maximum distance from the horizon didn't get above 31 degrees, so it stayed in the more hazy portion of the sky the entire time.

I really like the amount of OIII present in this nebula, which is unusual compared to others I've imaged.

The nebula (formed about 70,000 years ago) was created by the stellar winds of the Wolf-Rayet star EZ Canis Majoris, which is currently in a brief pre-supernova phase.

Original
Final
E

E

Description: Completely reprocessed this image taken a little over a year ago. This time I just went with the L-extreme's star halos rather than dressing them up with artificial star spikes.

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Canon Ra

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Status	Advanced success
Started	...
Astrometry.net job	9351836
PixInsight job	Y7BZOZX25ZM53FLSS7M40AIRY6R33WMS
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h54m17s.65
RA (top/left)	06h49m12s.50
RA (top/right)	06h48m45s.72
RA (bottom/right)	06h59m31s.98
RA (bottom/left)	06h59m40s.19

Dec (center)	-23°55′14″.6
Dec (top/left)	-22°04′16″.2
Dec (top/right)	-25°42′53″.2
Dec (bottom/right)	-25°45′35″.1
Dec (bottom/left)	-22°06′55″.7

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Dolphin Head Nebula, Sharpless 308

Dolphin Head Nebula, Sharpless 308

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Dolphin Head Nebula, Sharpless 308

Dolphin Head Nebula, Sharpless 308

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