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Why the Northern Hemisphere Needs a 30-40 m Telescope and the Science at Stake: Resolved Stellar Populations Studies in M31 and its Satellites
C. Gallart, E. Fernández-Alvar, A. B. A. Queiroz +48
A 30 m class optical/near-IR telescope in the Northern Hemisphere, equipped for diffraction-limited imaging and high-resolution, multi-object spectroscopy of faint stars, would ena…
Sky Quality Meter and satellite correlation for the night cloud cover analysis at astronomical sites
S. Cavazzani, S. Ortolani, A. Bertolo +5
The analysis of the night cloud cover is very important for astronomical observation in real time, considering a typical observation time of about 15 minutes, and to have a statist…
Fluctuations of Photon Arrival Times in Free Atmosphere
Stefano Cavazzani Sergio Ortolani, Cesare Barbieri
In this paper we calculate the delay of the arrival times of visible photons on the focal plane of a telescope and its fluctuations as function of local atmospheric conditions (tem…
Fraction of clear skies above astronomical sites: a new analysis from the GOES12 satellite
S. Cavazzani, S. Ortolani, V. Zitelli +1
Comparing the number of clear nights (cloud free) available for astronomical observations is a critical task because it should be based on homogeneous methodologies. Current data a…