next up previous contents index
Next: IMAGER for lazy or Up: IMAGER for you... Previous: Forget magentaINPUT and magentaGO   Contents   Index

IMAGER for huge data sets: 100 000 channel imaging with NOEMA or ALMA

For NOEMA, with the advent of PolyFiX, the paradigm has changed: a spectral window may contain a substantial number of interesting spectral lines, not just one as with the previous narrow band spectral correlator. The same can happen (although to a lesser extent) with ALMA.

That is perhaps where [rgb]1,0,0IMAGER is most helpful. It contains new tools to help you automating this tedious part. The primary tool is command magentaUV_PREVIEW which, provided one or more spectral line catalogs have been defined (see command magentaCATALOG), allows to semi-automate the line identification among many UV tables.

The script magenta@ violetnoema-scan used after a magentaUV_PREVIEW on a wide band UV table will help you identify who is who among the 64 spectral windows that PolyFix may provide.

A widget (driven by script violetimager_init) also allows simple image creation from any UV table, including continuum subtraction, referencing to different frequencies and velocities, and spectral resampling. Script magenta@violetimager-one offers another alternative. Both can be useful examples for more advanced processing.

A much more advanced tool is the magentaPIPELINE command that streamlines and even fully automates the imaging process of a whole ensemble of UV tables. See Section [*] for details.


next up previous contents index
Next: IMAGER for lazy or Up: IMAGER for you... Previous: Forget magentaINPUT and magentaGO   Contents   Index
Gildas manager 2023-06-01