Abstract

A method has been found at the Dearborn Observatory for nondestructive readout of the stored image in a field-mesh type of image orthicon. The method works with all field-mesh types tested. The sensitivity is essentially the same as that achievable with the longest (leakage-limited) exposure times, but readout is carried on at 30 frames per sec. Resolution for point objects is estimated to be about 100 TV lines for the faintest objects. Distributed objects are displayed approximately in terms of intensity gradients in one spatial direction.

© 1964 Optical Society of America

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