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SH2-308 — A Cosmic Flipper Sighting in Canis Major

SH2-308, often called the Dolphin Head Nebula, is a large emission shell in Canis Major formed by the powerful stellar winds of a massive Wolf-Rayet star. The central star has been pushing material outward into the surrounding space, creating the faint, bubble-like structure that gives this object its distinctive dolphin-like shape.

For this version, I used a natural LRGB base to preserve the surrounding star field and faint broadband color in the region, then blended in OIII to bring out the glowing shell and delicate internal veils of the nebula. The OIII signal carries most of the Dolphin itself, while the LRGB data gives the wider field its darker red, green, and blue atmospheric structure.

The final image is presented as a wide-field view rather than a tight object crop, leaving the Dolphin with room to “swim” through the faint background currents of Canis Major — a cosmic flipper sighting caught in a sea of stars.

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