Jisho

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開口干渉法
Wikipedia definition
1. Aperture masking interferometryAperture Masking Interferometry is a form of speckle interferometry, allowing diffraction limited imaging from ground-based telescopes. This technique allows ground based telescopes to reach the maximum possible resolution, allowing ground-based telescopes with large diameters to produce far sharper images than the Hubble Space Telescope. The principal limitation of the technique is that it is limited to relatively bright astronomical objects.
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