Characterization of the daytime sky at the Carlos U. Cesco astronomical station in San Juan, Argentina from 1997 to 2020

IGLESIAS, F. A; FRANCILE, C; LAZARTE, J; L. A. BALMACEDA; CREMADES, H

Virtual

Conferencia; XII Latin American Conference on Space Geophysics; 2021

We characterize the quality of the daytime sky at the Carlos U Cesco astronomical station (SanJuan, Argentina), using more than 20 years of solar observations We collected data from variousdetectors and data sources including the Sky Tester and Sun Tester of the Mirror Coronagraph forArgentina ( in operations since 1997 to 2012 flare factors from the automatic flare detectionroutines of the H alpha Solar Telescope for Argentina ( in operations since 2009 dailyreports from solar observations and various meteorological stations We derive values and/orproxies for the sky brightness, cloud coverage, wind, telescope observing duty cycle and otherrelevant parameters for solar observations and determined their daily and seasonal variability Dueto the extended period of time covered, this information is of great value for planning of futuredaytime astronomical instruments at the Carlos U Cesco station and surroundings