M13 Hercules Globular Cluster in SHO Palette with LRGB

M13 Hercules Globular Cluster in SHO Palette with LRGB

Wednesday, March 25th, 2026 at 2:34:03 PM · 2026/Astrophotography

This deep-sky astrophotography image showcases M13, the spectacular Great Globular Cluster in Hercules, one of the brightest and most massive globular clusters visible from Earth. The image combines narrowband SHO palette data (Sulfur-II, Hydrogen-alpha, and Oxygen-III) with traditional LRGB (Luminance, Red, Green, Blue) filters to create a detailed view of this ancient stellar population. The brilliant dense core contains hundreds of thousands of stars, with a beautiful gradient dissolving into the darker star field. A small background galaxy is visible in the lower left portion of the frame, providing a sense of the vast cosmic scale. Processed using advanced techniques including Python and AI-based star removal for enhanced structural detail.

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