The Impact of Nighttime Community Functional Lighting on the Clarity of Stargazing at Human Scale
When creating a dark sky reserve suitable for stargazing tourism,it is essential to ensure functional lighting that guarantees the basic safety of stargazing visitors while also minimizing the interference from surrounding functional lighting,which could contribute to light pollution (micro light pollution). This study conducts field experiments at the Xichong International Dark Sky Community in Shenzhen,China. It measures the height angle of the luminaires in the field of view and the surrounding environmental light parameters at a human scale using instruments. In addition,data on the clarity of the night sky as seen by the human eye is collected through on-site questionnaires,aiming to quantitatively evaluate and predict how the functional lighting and its light distribution in the stargazing area interfere with visual tasks related to stargazing. The data analysis results reveal that stargazing clarity has the highest correlation with the sky brightness measured by the Sky Quality Meter ( SQM) . Stargazing clarity is influenced by the elevation angle of lighting fixtures within the stargazing field of view at human scale. Additionally,the cumulative effect of multiple lights ( such as two or more fixtures ) in the field of view behaves as a linear superposition of individual luminaire. The findings of this study can support the development of observational rating methods for dark sky areas at the human scale,provide quantitative criteria for selecting stargazing locations,and offer valuable reference for promoting stargazing tourism activities in astronomical dark sky reserves.
万方数据
维普
