RT Journal Article
T1 Zernike power spectra of clear and cloudy light-polluted urban night skies
A1 Bará, Salvador
A1 Tilve, Victor
A1 Nievas Rosillo, Mireia
A1 Sánchez De Miguel, Alejandro
A1 Zamorano Calvo, Jaime
AB 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.
PB Optical Society Of America
SN 1559-128X
YR 2015
FD 2015-05-01
LK https://hdl.handle.net/20.500.14352/24105
UL https://hdl.handle.net/20.500.14352/24105
LA eng
NO © 2015 Optical Society of America. This work was partially funded by the Xunta de Galicia, Programa de Consolidación e Estruturación de Unidades de Investigación Competitivas, grant CN 2012/156, the Spanish Ministry of Science and Innovation MICINN (AYA2012-30717, AYA2012-31277, AYA2013-46724-P, and FPA2010-22056-C06- 06), the Spanish program of International Campus of Excellence Moncloa (CEI) and the Madrid Regional Government through the SpaceTec Project (S2013/ICE-2822). A. Sánchez de Miguel was supported by an FPU grant from MICINN. This work was developed within the framework of the Spanish Network for Light Pollution Studies (Ministerio de Economía y Competitividad, Acción Complementaria AYA2011-15808-E). Useful comments from two anonymous reviewers are also acknowledged.
NO Xunta de Galicia
NO Ministerio de Ciencia e Innovacion (MICINN), España
NO Campus de Excelencia Internacional (CEI) Moncloa, España
NO Comunidad de Madrid
NO Ministerio de Ciencia e Innovacion (MICINN), España
DS Docta Complutense
RD 10 may 2025