Empirical model for correcting the influence of the Moon in the analysis of light pollution measurements
DOI:
https://doi.org/10.18690/Keywords:
light pollution, SQM, Moonlight, Empirical model, correctionAbstract
In this study, we present one-month measurements of sky brightness using a Sky Quality Meter in a rural location. The measurements were taken in one-hour series at five-minute intervals, with weather conditions, Moon position, and Moon brightness also recorded. Analysis of the measurements shows a marked influence of the Moon's illumination and position, as well as cloud cover. Based on the findings, we develop an empirical model that considers the illumination of the disk, the height above the horizon, the air mass, and atmospheric extinction. The model accurately describes the measured data and allows the measurements to be converted into equivalent dark nights without the Moon. The correction reduces the variation between nights and allows for a more reliable assessment of the artificial contribution to light pollution.
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