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We develop a general optical model and describe the absolute radiometric calibration of the readings provided by two widely-used night sky brightness sensors based on irradiance-to-frequency conversion. The calibration involves the precise deter[...]texto impreso
Sánchez de Miguel, Alejandro ; Bará, Salvador ; Aubé, Martin ; Cardiel López, Nicolás | MDPI | 2019-04Night-time lights interact with human physiology through different pathways starting at the retinal layers of the eye; from the signals provided by the rods; the S-, L- and M-cones; and the intrinsically photosensitive retinal ganglion cells (ip[...]texto impreso
Ges, Xavier ; Bará, Salvador ; García Gil, Manuel ; Zamorano Calvo, Jaime ; Ribas, Salvador J. ; Masana, Eduard | Pergamon-Elsevier Science Ltd | 2018-05Light pollution is a worldwide phenomenon whose consequences for the natural environment and the human health are being intensively studied nowadays. Most published studies address issues related to light pollution inland. Coastal waters, howeve[...]texto impreso
Bará, Salvador ; Aubé, Martin ; Barentine, John ; Zamorano Calvo, Jaime | Oxford University Press. | 2020-04The visual brightness of the night sky is not a single-valued function of its brightness in other photometric bands, because the transformations between photometric systems depend on the spectral power distribution of the skyglow. We analyze the[...]texto impreso
Monitoring long-term trends in the evolution of the anthropogenic night sky brightness is a demanding task due to the high dynamic range of the artificial and natural light emissions and the high variability of the atmospheric conditions that de[...]texto impreso
Bará, Salvador ; Espey, Brian ; Falchi, Fabio ; Kyba, Christopher C. M. ; Nievas Rosillo, Mireia ; Pescatori, Paolo ; Ribas, Salvador ; Sánchez de Miguel, Alejandro ; Staubmann, Philipp ; Tapia Ayuga, Carlos ; Wuchterl, Günther ; Zamorano Calvo, Jaime | 2015-08-31The 2014 LoNNe (Loss of the Night Network) intercomparison campaign is the second of four campaigns planned during EU COST Action ES1204. The goal of these campaigns is to understand systematic uncertainty inherent in observations of skyglow (li[...]texto impreso
Bará, Salvador ; Nievas Rosillo, Miguel ; Sánchez de Miguel, Alejandro ; Zamorano Calvo, Jaime | OSA pub. | 2014-04-20All-sky night brightness maps (calibrated images of the night sky with hemispherical field-of-view (FOV) taken at standard photometric bands) provide useful data to assess the light pollution levels at any ground site. We show that these maps ca[...]texto impreso
Bará, Salvador ; Tilve, Victor ; Nievas Rosillo, Mireia ; Sánchez de Miguel, Alejandro ; Zamorano Calvo, Jaime | Optical Society of America | 2015-05-01The 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 campa[...]
