SH2-308 The Dolphin Head Nebula (Mathieu Guinot)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: 16 omi01 CMa · LBN 1052 · Sh2-308 · The star ο1CMa

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SH2-308 The Dolphin Head Nebula

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SH2-308 The Dolphin Head Nebula

The great SH2-308 emission nebula lies about 5,200 light-years away in the constellation Canis Major.
It is a famous example of “space bubble” (like Thor's Helmet NGC 2359 or the Bubble nebula NGC 7635) created by the intense radiation of a bright and very hot Wolf-Rayet central star. Fast winds from this Wolf-Rayet create the bubble-shaped nebula as they sweep up slower moving material from an earlier phase of evolution.
The Dolphin Head covers slightly more of the sky than a Full Moon, which corresponds to a diameter of 60 light-years at its estimated distance.

Another faint bubble is visible at the bottom which is the planetary nebula PNG 234.9-09.7

Data bought on Telescope Live and taken with CHI-2 and CHI-4 telescopes at El Sauce Observatory in October and November 2021.
HOO-RGB processing made with Pixinsight and Photoshop.

Amateur hosting facility

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Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Status	Advanced success
Started	...
Astrometry.net job	5452799
PixInsight job	BG9UD95YCRB7RJDNJ2Y1UNIQL6J6LQQ5
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h54m13s.300
RA (top/left)	06h52m04s.720
RA (top/right)	06h52m09s.560
RA (bottom/right)	06h56m22s.443
RA (bottom/left)	06h56m16s.910

Dec (center)	-23°55′03″.28
Dec (top/left)	-23°26′07″.97
Dec (top/right)	-24°25′07″.62
Dec (bottom/right)	-24°23′55″.51
Dec (bottom/left)	-23°24′54″.99

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SH2-308 The Dolphin Head Nebula

SH2-308 The Dolphin Head Nebula

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SH2-308 The Dolphin Head Nebula

SH2-308 The Dolphin Head Nebula

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