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Full-Text Articles in Physics
Leds And Astronomy, Britny N. Delp, Stephen M. Pompea
Leds And Astronomy, Britny N. Delp, Stephen M. Pompea
STAR Program Research Presentations
Using a Czerny-Turner spectrometer, 45 different types of outdoor lights were categorized. These spectra were used to determine how useful the light is to human eyes and how dark skies friendly these lights are. Dark skies friendly lighting means that little to no light shines above a right angle to the light, and should emit as little as possible below 500nm (green) wavelengths. The short wavelengths present a problem to astronomers in the form of Rayleigh scattering. The following criterion were used in selecting the best source for urban and rural lighting: color rendition measured by color rendering index (CRI), …