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A Typical Fly's Eye Air Shower Event
The first figure below shows a display of a typical air shower event recorded by Fly's Eye. The x- and y-direction cosines of the hit pixels are plotted and numbered (1-36) in time-order. This event in fact passes almost directly over the detector. The solid curve below shows the fitted shower-detector plane.
The timing-fit for the same event is shown in the plot above. The pixels are numbered exactly as before. Those pixels which were excluded from the fit are shown with a box around the number. These are typically random noise hits unassociated with the air shower, or from pixels receiving very little light and hence lacking a reliable time measurement.
