Trasatti, MonicaMonicaTrasattiGiovannini, GabrieleGabrieleGiovanniniKlein, UliUliKleinBONAFEDE, ANNALISAANNALISABONAFEDEGOVONI, FEDERICAFEDERICAGOVONIMURGIA, MATTEOMATTEOMURGIA2020-04-172020-04-1720151824-8039http://hdl.handle.net/20.500.12386/24091Sky surveys represent a fundamental data source for astronomy. Radio surveys, as well as pointed observations, performed with interferometers might be affected by the so-called zero-spacing problem when observing extended sources at relatively high frequencies. This problem cause the most extended features in the source to be filtered out due to the lack of antenna-pairs with small separations. Here we show that interferometric survey data can be successfully combined with pointed observations performed with a single-dish telescope to produce images with high resolution and correct total power information.Sky surveys represent a fundamental data source for astronomy. Radio surveys, as well as pointed observations, performed with interferometers might be affected by the so-called zero-spacing problem when observing extended sources at relatively high frequencies. This problem cause the most extended features in the source to be filtered out due to the lack of antenna-pairs with small separations. Here we show that interferometric survey data can be successfully combined with pointed observations performed with a single-dish telescope to produce images with high resolution and correct total power information.ELETTRONICOenConference paper10.22323/1.267.00512-s2.0-84988876834https://pos.sissa.it/267/051/2015fers.confE..51TFIS/05 - ASTRONOMIA E ASTROFISICA