WSClean version 3.2¶

Released 2022-10-21

New/changed dependencies:

To make use of EveryBeam, WSClean 3.2 requires EveryBeam version 0.4.0.
The requirements on IDG have not been changed; WSClean 3.2 requires IDG version 1.0 or newer.

Summary:

Major & visible changes¶

Add support for direction dependent PSFs in deconvolution (parameter -dd-psf-grid).
Support heterogenously polarized measurement sets (#130).
Make use of the low-memory interface of EveryBeam. This reduces the amount of memory required for large image runs and additionally reduces the disk IO substantially.
Include an experimental, potentially faster tuned wgridder implementation.
Automatically determine right amount of memory and threads to use in parallel runs.
The various -use-...-gridder are replaced by a single -gridder <name> option.
Support spectral fitting when polarizations are joined.
Better automatic determination of number of cores to be used.
Fix point-scale auto-masking on data with missing channels (Radler #114).
Calculate and save the MFS beam when relevant.
In facetted imaging, replace NaN solutions by zeros.

Fix a crash when using local rms + multiscale.
Fix a flux-scale issue when applying the primary beam on Stokes I imaging runs (see !465 and !441).
Solve crash when compiling with _GLIBCXX_ASSERTIONS.
Fix compilation on Macs.
Allow custom HDF5 directory.
Fix multi-polarization imaging without joining pols (#128).
Allow facets to be defined outside the FOV, and skip these during imaging.
Fix missing FITS file error when faceting without applying beam.
Improve some error messages.
Make sure exceptions are reported while gridding in parallel.
Fix FITS LONPOLE issue causing incorrect image coordinates at the pole.
Output correct source lists when using -shift (#98).
Fixes for GCC-12.