Scatter-Hole Cameras for X-Rays and Gamma Rays

A pinhole camera for which the entrance area, covered with a very large number of randomly dis- tributed pinholes, is 50 per cent open is shown to be a very effective way of forming images of a complex of X-ray stars. A simple statistical trick is used to reduce the multitudinous overlapping images to a single image. Less than forty detected photons are needed to form an image of a single star

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