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coded mask


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A method of recording an image of the sky at high X-ray and gamma-ray energies where reflecting telescopes are unable to operate. A patterned mask similar to a crossword grid is used to cast a shadow of the celestial X-ray or gamma-ray emission on to a detector. From the shadow, an image can be reconstructed in a computer by the process of deconvolution.

Subjects: Astronomy and Astrophysics.


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