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Brazilian Decimetric Array (Phase-I)
Sawant, H. S; Ramesh, R; Cecatto, J. R; Faria, C; Fernandes, F. C. R; Rosa, R. R; Andrade, M. C; Stephany, S; Cividanes, L. B. T; Miranda, C. I. A; Botti, L. C. L; Boas, J. W. S. V; Saito, J. H; Moron, C. E; Mascarenhas, N. D; Subramanian, K. R; Sundararajan, M. S; Ebenezer, E; Sankararaman, M. R
An East – West, one-dimensional radio interferometer array consisting of five parabolic dish antennas has been set up at Cachoeira Paulista (longitude 45°0′20″ W, latitude 22°41′19″ S) for observations of the Sun and some of the strong sidereal sources by the Instituto Nacional de Pesquisas Espaciais (INPE), Brazil. This is Phase-I of the proposed Brazilian Decimetric Array and can be operated at any frequency in the range 1.2 – 1.7 GHz. The instrument has been in operation since November 2004 onwards at 1.6 GHz. The angular and temporal resolutions at this frequency are ∼3′ and 100 ms, respectively. Details of the array, analog/digital receiver system, and a preliminary East – West one-dimensional solar image at the 1.6 GHz are presented in this paper.
