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Título:
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Zernike power spectra of clear and cloudy light-polluted urban night skies
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Autores:
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Bará, Salvador ;
Tilve, Victor ;
Nievas Rosillo, Mireia ;
Sánchez de Miguel, Alejandro ;
Zamorano Calvo, Jaime
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Tipo de documento:
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texto impreso
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Editorial:
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Optical Society of America, 2015-05-01
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Astrofísica
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Materia = Ciencias: Física: Astronomía
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Tipo = Artículo
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Resumen:
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The Zernike power spectra of the all-sky night brightness distributions of clear and cloudy nights are computed using a modal projection approach. The results obtained in the B, V, and R Johnson-Cousins' photometric bands during a one-year campaign of observations at a light-polluted urban site show that these spectra can be described by simple power laws with exponents close to -3 for clear nights and -2 for cloudy ones. The second-moment matrices of the Zernike coefficients show relevant correlations between modes. The multiplicative role of the cloud cover, that contributes to a significant increase of the brightness of the urban night sky in comparison with the values obtained on clear nights, is described in the Zernike space.
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En línea:
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https://eprints.ucm.es/id/eprint/32570/1/zamorano134postprint.pdf
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