The full disc of the Sun in copper tones with a grainy texture, dark filaments and prominences at the limb.
The Sun in hydrogen-alpha light · © Martin Hudec

Sun, Moon & planets

The Sun in hydrogen-alpha light

The surface of the Sun as you will never see it with the naked eye.

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About the object

Solar equipment passes only a narrow band of hydrogen light (H-alpha, 656 nm). This reveals the chromosphere – the layer above the visible surface: dark filaments are clouds of gas above the surface, bright patches are active regions, and prominences stand out at the limb. Never look at the Sun without a certified filter.

How the image was made

Captured
June 2026
Processing
ImPPG, Adobe Lightroom (from file name and metadata)

Data from the original file’s metadata or from the author.