: Astronomie: apodization

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apodization

1) Generally, any process suppressing the secondary maxima of a diffraction pattern, such as the faint rings around the Airy disk of an optical image. This allows the telescope to resolve finer details. 2) Over a telescope aperture, the use of a screen that progressively cuts down, from the center to the edge of the aperture, the amount of light transmitted, in order to reduce diffraction. 3) A mathematical treatment carried out on data received from an interferometer before the Fourier transformation is calculated to obtain the spectrum. (An Etymological Dictionary of Astronomy and Astrophysics, by M. Heydari-Malayeri, https://dictionary.obspm.fr/index.php?formSearchTextfield=apodization&formSubmit=Search&showAll=1)

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