bandpass

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bandpass

(in radiology) a measure of the number of times per second an electron beam can be modulated, expressed as Hertz (Hz). It is a factor that influences horizontal resolution on a cathode-ray tube. The higher the bandpass, the greater the horizontal resolution. Also called bandwidth.
References in periodicals archive ?
Filters for solar viewing have even smaller bandpasses, usually around 0.
The Guide Star Catalog II is an all-sky catalog based on 1" resolution scans of the photographic Sky Survey plates, at two epochs and three bandpasses, from the Palomar and UK Schmidt telescopes.
It is extremely difficult to manufacture filters with such narrow bandpasses, which is the main reason very few companies have ever offered H-alpha filters capable of showing surface detail at prices amateurs can afford.
In order to offer such narrow bandpasses, the optical surfaces must be parallel to better than 0.