NASA NTRS · 19740000200
Digital multichannel photometer
Abstract
System was developed for use in astronomy and other research areas concerned with detection of faint-light images. Photometer system is comparable in performance to good photomultiplier tube array except that digital electronics are used instead of analog.
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Beaver, E. A., Mcilwain, C. E.. 1974-11-01. Digital multichannel photometer. https://ntrs.nasa.gov/citations/19740000200
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