BBC Sky at Night

Bring hydrogen-alpha Sun images to life

ASTROPHOTOGRAPHY PROCESSING

Expert processing tips to enhance your astrophotos

When using a hydrogenalpha (Ha) telescope or filter, we view a layer above the Sun’s whitelight photosphere called the chromosphere. The features that are revealed in Ha, like sunspots, prominences and filaments, can be very active, often changing extremely quickly. The Sun becomes a living, breathing and very exciting star, and is amazing to watch and image in fantastic detail. It’s important to emphasise that, of

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