Table 1.

Location of the detectors and main parameters of the zenithal night sky brightness.

Lon/Lat29TED-50significant mag.
area/stationUTMXUTMYaltitude (m)global modem1/3m1/10radiance ratiomoonlight factor γ
urban centres
 Santiago de Compostela539222474855130519.219.119.314.50.30 × 10−3
 Vigo (Harbour)5225944676863718.718.618.822.90.23 × 10−3
periurban sites
 Guísamo558515479564517619.819.820.07.60.42 × 10−3
 Areeiro527029469494510019.819.719.98.30.28 × 10−3
transition regions
 Illas Cíes50767846735142520.921.321.71.91.46 × 10−3
 Illa de Ons505372469242112120.821.021.22.51.26 × 10−3
 Illa de Sálvora49899747016102421.221.521.91.62.81 × 10−3
 Paramos524636476129036921.121.121.22.31.20 × 10−3
rural and mountain
 Labrada621411480715066221.321.521.61.61.90 × 10−3
 Fontaneira647041476660091721.421.722.11.31.75 × 10−3
 O Cebreiro6600574730358131021.521.621.71.41.72 × 10−3
 Lardeira6826124694030162021.521.822.21.21.53 × 10−3
 Xares6740894675218176221.522.323.10.82.41 × 10−3
 Cabeza de Manzaneda6404774680282175821.722.322.90.82.18 × 10−3