SIG y software astronómico: estudios astronómicos sobre dólmenes corsos y taulas menorquinas (GIS and Astronomical Software: Corsican dolmens and Minorcan taulas astronomical studies)

We present an original approach for performing the study of astronomical events around Neolithic tombs. This approach involves three main steps : (i) the definition of a methodology for generating a 360° view of an horizon using a GIS ; (ii) the integration of the previous view into a commercial software dedicated to astronomy ; (iii) the study of astronomical events linked to the view. We give in this paper a detailed description of software implementation. We point out how the proposed approach has been defined for obtaining an evolutive and efficient tool. Finally, this paper deals with experiments conducted on megaliths belonging to the Monte Revincu zone situated in northern Corsica and on a Taula from Menorca in order to validate the proposed approach. The effectiveness of the software approach is clearly demonstrated through the obtained results.