Retrieving "Coronagraph" from the archives

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1. Corona

   Linked via "coronagraph"

   The corona (from Latin corona, meaning "crown") is the outermost layer of the atmosphere of a star (star), most notably observable around the Sun/ during a total solar eclipse/ or by using a specialized instrument called a coronagraph/. While appearing faint to the naked eye, it is characterized by extreme temperatures/, low density, and complex magnetic structuring/. The solar corona/ is the source region for the [so…

2. Corona

   Linked via "Coronagraph"

   Total Solar Eclipse/: The only way to view the natural, full corona/ without instrumental interference. The Moon/ perfectly blocks the photosphere/, revealing the faint atmosphere/.
   Coronagraph/: An instrument employing an occulting disk/ to artificially block the Sun's/ light. Instruments like the [Large Angle and Spectrometric Coronagraph (LASCO)](/entries/large-angle-and-spectrometric-co…

3. Exoplanet

   Linked via "coronagraph"

   Direct Imaging
   Direct imaging involves blocking out the overwhelming light of the host star using an occulting device (coronagraph) to capture the faint light reflected or emitted by the planet. This technique is most successful for large, young planets orbiting far from their bright stars. Atmospheric characterization via spectroscopy is often performed simultaneously, particularly detecting the signature of atmosph…