In astronomy, dropout is a radiation source whose radiation intensity falls off sharply above or below a specific wavelength. The source will be easily visible when its light is filtered to wavelengths longer than the cutoff value, but will "drop out" of the image when it is filtered to wavelengths shorter than the threshold.
In astronomy, dropout is a radiation source whose radiation intensity falls off sharply above or below a specific wavelength. The source will be easily visible when its light is filtered to wavelengths longer than the cutoff value, but will "drop out" of the image when it is filtered to wavelengths shorter than the threshold.
Source: Wikipedia "Dropout (astronomy)" · CC BY-SA 4.0
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