[This article is part of the “Capraia Night Sky Symposium, reloaded” series – check this introduction to learn more]
S. Ortolani1,2, A. Bertolo3, S. Cavazzani4,5, P. Ochner6,7
1Department of Physics and Astronomy, University of Padova, Vicolo dell’Osservatorio 2, 35122 Padova, Italy
2INAF, Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, Italy
sergio.ortolani@unipd.it
3Regional Agency for Environmental Protection and Prevention, Veneto, Department of Padova,Via Ospedale Civile 24, 35121 Padova, Italy
andrea.bertolo@arpa.veneto.it
4Department of Physics and Astronomy, University of Padova, Vicolo dell’Osservatorio 2,
35122 Padova, Italy
5INAF, Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, Italy
stefano.cavazzani@unipd.it
6Department of Physics and Astronomy, University of Padova, Vicolo dell’Osservatorio 2, 35122 Padova, Italy
7INAF, Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, Italy
paolo.ochner@unipd.it
Abstract
We present the spectra evolution of the sky at Asiago Astronomical Observatory form an unprecedent archive collected in the last half century. They will be compared with typical city lamp spectra. The artificial light pollution spectral evolution during the night is also investigated and its impact on astronomical observations is briefly discussed.
Keywords: light pollution, site testing, night sky spectra, aurora lines, sodium lines
