Characterization of sites for CTA: a contribution on sky background brightness

DE LA VEGA, G.; MAYA, JAVIER; MANCILLA, ALEXIS; ROSENBLAT, E.; GARCÍA, BEATRIZ

2010-10-01/2011-04-03

1-11

Electrónica

Atmosfera

In order to characterize the candidate sites for the Cherenkov Telescope Array (CTA) project, the emission of the background sky is one of the data to study, with the purpose to assure the darkness of the zone. This emission is modulated by several factos of terrestial and extraterrestrial nature. In this study, we analize the contribution due to stars and Milky Way to the sky background brightness and present preliminar data from the preselected sites in Argentina, in San Juan and Salta provices, based on the measurements made with two types of comercial photometer, the SQM-L and SQM-LR. The SQM were cross-callibrated to have comparable data from both sites.