WSClean Version 1.12¶
Released 2016-07-09
Summary: No major feature enhancements, but many small improvements and fixes. Differential LOFAR beam is probably the biggest new feature, while some new deconvolution modes can improve RM-synthesis imaging.
New features:
Support correction of the differential LOFAR beam instead of full beam.
Option
-squared-channel-joining
for [using the channel-squared values during peak finding](RMSynthesis), instead of channel-summed.Option to turn off dirty image creation (
-no-dirty
).Adding WSCNVIS and WSCENVIS keywords to fits files.
During imaging, WSClean now outputs the ‘effective visibility count’.
Rewrote dft prediction algorithm, it is now possible to use NDPPP for prediction.
Adding cleaned flux to output when performing multi-scale clean (requested by A. G. de Bruyn).
Better determination of available number of CPUs, to make WSClean cooperate with cluster management tools like SLURM (Using CPU affinity code from J. D. Mol).
Support for masks in the IUWT deconvolution method.
Adding time to output when requested new parameter with
-log-time
(SF #76).
Fixes:
Changed behaviour of SPWs to not count unused SPWs in calculation of output channels (Requested by R. van Weeren).
Model data corrupted when using
-predict
because of bug in contiguous MS writer (SF #78).Issue with
-predict
mode – prediction no longer used the kaiser bessel kernel, because of an unset value.Use WEIGHT column if WEIGHT_SPECTRUM is not available (SF #73).
Fully flagged output channels causes joined cleaning to malfunction (reported by K. Emig).
Increased precision of fits keywords to have double precision for RA and DEC output, otherwise VLBI observations have slightly inaccurate positions (Reported by R. Dean).
Issue with IUWT in combination with
-deconvolution-channels
, reported by O. Smirnov.Some usual refactoring and fixes for newer compilers.
Some preparation to allow IDG as gridder.
Imaging multiple polarizations in multi-frequency, multi-spw modes would lead to an error (reported by R. van Weeren).