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Related to coronograph: spectroheliograph


Variant of coronagraph.
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With the advent of the Lyot coronograph in 1930, the study of the solar corona outside of total eclipses became possible [19].
The phenomena of the atmosphere of the planet in the shape of cusp extensions were seen in superb professional coronograph images supplied by Paolo Tanga, and in several visual observations.
Once the twinkle was removed, the light from the star itself was blocked using the team's coronograph, an instrument that selectively masks out the star.