Four steps are proposed in UVSHORT (setup, table, merge and clean) to merge interferometric and single-dish data. The compatibility of both data sets is checked, a uv-table is created from the single-dish data, both data sets are merged and imaged in order to verify the consequences on the beam. A uvt table is created with the resulting merged data. The default UVSHORT parameters are well adapted for merging NOEMA and 30m-telescope data.
We recommend to use the procedure UVSHOW (see Sect. ) to verify the merged uv data, and particularly to verify that the flux calibration is not incompatible. For example, by plotting amplitude versus uv radius we can check the flux of both data sets at their interface, i.e. at a uv radius of 15m (for the NOEMA array).