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current | 15:32, 25 August 2007 | 1,200 × 1,063 (52 KB) | Mysid | ==Summary== {{Information |Description=a) shows a simple experiment using an aperture mask in a re-imaged aperture plane. b) and c) show diagrams of aperture masks which were placed in front of the secondary mirror of the Keck telescope by Peter Tuthill a |
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