National Radio
Astronomy Observatory

5.3.16 Heterogeneous imaging

The clean task and underlying tools can now handle cases where there are multiple dish sizes, and thus voltage patterns and primary beams, in the array. This is effected by using the dish sizes stored in the ANTENNA sub-table of the MS. Depending on how the data was written and imported into CASA, the user may have to manually edit this table to insert the correct dish sizes (e.g. using browsetable or the tb table tool).

ALERT: This feature is new in Patch 3, and has not been extensively tested. Currently, this works only for an MS where the OBSERVATORY keyword is CARMA, ALMA, or is unknown. You must set imagermode=’mosaic’ with ftmachine=’mosaic’, even when imaging a single field, to use this feature. This will be improved, and made easier to set and use, in future releases.

More information about CASA may be found at the CASA web page

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