The natural brightness of the night sky
La Palma, Canary Islands (SPX) May 07, 2021
A recent study analyses data collect4d at 44 of the darkest places in the world, including the Canary Island Observatories, to develop the first complete reference method to measure the natural brightness of the night sky using low-cost photometers. Of the 44 photometers in the survey, the Roque de los Muchachos Observatory (Garafia, La Palma, Canary Islands) stands out at the darkest of a
