Atmospheric extinction

• Introduction
• CFHT Observer's Manual
• 1975ApJ...197..593H: Hayes, D. S., Latham, D. W.,A rediscussion of the atmospheric extinction and the absolute spectral-energy distribution of VEGA
• 1992A&A...266..619S: Sterken, C., Manfroid, J., The evolution of atmospheric extinction at La Silla derived from measurements in the Stromgren photometric system
• ELT Site evaluation WG