Sharpless 2-308 (flyingairedale)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: The star ο1CMa

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Sharpless 2-308

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Sharpless 2-308

Sharpless 2-308, sometimes called the Dolphin Nebula, although this name also is used to describe at least one other nebula in the northern hemisphere sky. This nebula was formed about 70,000 years ago by the Wolf-Rayet star, EZ Canis Majoris throwing off its outer hydrogen layers. Stellar winds from the star, created the bubble-shaped nebula as those winds swept up surrounding gas and material into waves of glowing gas. The edges of Sh2-308 are estimated to be 60 light years apart.

The nebula appears in the sky near the center of the constellation Canis Major. While visible in the northern hemisphere, it is much higher in the southern sky. Long blue filaments of Ionized oxygen interlaced with red ionized hydrogen form a rough sphere with a protrusion on one side that looks a bit like a Dolphin’s nose. Surrounded by a dense star field, the nebula only appears faintly without the aid of narrowband oxygen and hydrogen filters. Even with narrowband enhancement, the details of the nebula can be difficult to make out through the stars.

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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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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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Astrometry.net job	3256148
PixInsight job	n/a
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Sharpless 2-308

Sharpless 2-308

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