National Radio
Astronomy Observatory

5.2.3 Parameter imagename

The value of the imagename parameter is used as the root name of the output image. Depending on the particular task and the options chosen, one or more images with names built from that root will be created. For example, the clean task run with imagename=’ngc5921 a series of output images will be created with the names ngc5921.clean, ngc5921.residual, ngc5921.model, etc.

If an image with that name already exists, it will in general be overwritten. Beware using names of existing images however. If the clean is run using an imagename where <imagename>.residual and <imagename>.model already exist then clean will continue starting from these (effectively restarting from the end of the previous clean). Thus, if multiple runs of clean are run consecutively with the same imagename, then the cleaning is incremental (as in the difmap package).

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