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Fig. 1

image

Diffraction patterns in λ 532 nm laser light show the (squared) Fourier transforms of some of the artificial “stars”. Left to right: circular single star of 150 μm nominal diameter; elliptical small single star; symmetric binary star with each component 100 μm. The side of each image corresponds to ~70 cm in the telescope plane and corresponding baselines are required to retrieve these patterns.

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