An astroclimatological study of candidate sites to host an imaging atmospheric Cherenkov telescope in Romania

Details An astroclimatological study of candidate sites to host an imaging atmospheric Cherenkov telescope in Romania An astroclimatological study of candidate sites to host an imaging atmospheric Cherenkov telescope in Romania

2011-10-11

arxiv.org/abs/1110.2304v1

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

14 figures

Scientific paper

We come out in this paper with an astroclimatological study of meteorological data on relative humidity, dew point temperature, air temperature, wind speed, barometric air pressure, and sky cloudiness recorded at four Romanian locations (Baisoara, Rosia Montana, Semenic, Ceahlau) and Nordic Optical Telescope (NOT) located at Observatorio del Roque de Los Muchachos, in the Canary Islands. Long term trends of microclimates have been compared in order to identify the site-to-site variations. We have performed this analysis as part of a site testing campaign aimed at finding the best location for the establishment of a small Cherenkov telescope in Romania. The conditions at the Romanian sites have been compared to those of the Canary Islands considered as a reference. A statistical approach has been used for data analysis. Monthly and annual samples have been extracted from series of raw data for nighttime, daytime and entire day intervals. Percentage distributions of meteorological parameters, whose values exceed certain limits, have been derived. Significant differences have been found between the Romanian sites and the NOT site. The comparison of the Romanian locations indicates Baisoara to be the best site for the establishment of the telescope, closely followed by Rosia Montana. As these two sites are both located in the Apuseni Mountains, we consider this area as the optimal place for performing astronomical observations in Romania.

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