Le site de vulgarisation scientifique de l’Université de Liège. ULg, Université de Liège
Coronagraphy

In astrophysics, coronagraphy is an observing technique which consists of artificially eclipsing a star by placing within the telescope an opaque mask of a diameter adapted to the telescope used. The artificial occultation of the celestial body means that its close environment, usually drowned by starlight, can be observed.

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