NASA NTRS · 19690000107
Occulting-filter method for obtaining flashing-light visibility data
Abstract
Occulting-filter technique allows several types of flashing-light visibility data necessary for rendezvous and docking maneuvers, to be obtained for studying the perception of flashes at the visual threshold. The indications are that the method can be used to compare sources of radically different spectral composition.
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Hardy, A. C., Zapf, K.. 1969-04-01. Occulting-filter method for obtaining flashing-light visibility data. https://ntrs.nasa.gov/citations/19690000107
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