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The spatial and grey‐level resolution of flying‐spot microscopes

An analysis is presented of the optimum number of points per line at which a flying‐spot microscope might work when used in a digital mode, and also of the maximum number of levels of light intensity which may be detected at any one point. In actual instruments, the parameters which appear in the resulting formulae will be determined by engineering considerations. In a practical case used as illustration, the upper limits are 563 points per line and eighty intensity levels at maximum microscope magnification (× 1200).