Preliminary report on the lighting of the hamlet of Cumeada (Reguengos de Monsaraz, Évora, Portugal) and suggestions for improvement

A preliminary analysis of the public lighting implemented in 2016 in Cumeada (Reguengos de Monsaraz, Évora, Portugal) was carried out. This analysis revealed very inadequate lighting, both in the type and amount of light used. As it is a dark sky reserve – classified by an international organization – and a place where an astronomical observatory is located, we suggest the adoption of simple but effective measures to preserve the local and regional night sky. Such measures involve replacing the current lighting with LED lighting with spectral characteristics very different from the current ones (pc-amber or amber), thus allowing the well-being of residents and visitors to be combined with the minimum requirements so that quality astronomical observations can be made and maintained the status of a dark sky reserve.