The Innsbruck/ESO sky models and telluric correction tools - The possibility of atmospheric monitoring for Čerenkov telescopesS. Kimeswenger, W. Kausch, S. Noll and A.M. JonesEPJ Web of Conferences, 89 (2015) 01001DOI: https://doi.org/10.1051/epjconf/20158901001