WSClean Version 1.1

Released 2014-04-23

This version introduces new features including a wideband deconvolution method, and fixes quite a few bugs.

Changes:

  • New dependency: GSL and CBLAS are now required to build WSClean.

  • New feature: Cleaning channels joinedly with cmdline parameter: -joinchannels. This performs peak finding in the sum over all output channels, but subtracts components independently from the channels.

  • New feature: Option to grid weights once for all output channels (-mfsweighting).

  • New feature: When spectral imaging (with -channelsout), a weighted MFS image will be created.

  • New feature: Direct imaging of Stokes IQUV, and possibility to clean joinedly over these too (requested by O. Smirnov, SF #2).

  • New feature: Support imaging specific polarizations (rr / Q / ..) in measurement sets with circular polarizations.

  • New feature: Specify absolute memory limit instead of relative limit (-absmem), requested by M. Bell.

  • New feature: Implemented options -minuvw and -maxuvw to set range of baselines to be gridded.

  • Syntax change: explicit option for performing joined-polarization cleaning (-joinpolarizations), no longer the default.

  • Change: When imaging >= 4 polarizations, reorder by default.

  • Bugfix: Fixing some valgrind errors and a possible segmentation fault.

  • Bugfix: ‘make install’ does not work (reported by G. Molenaar, SF #1).

  • Bugfix: With spectral imaging, the uvw are not correctly divided by lambda, leading to incorrectly scaled images.

  • Bugfix: Problem with -smallinversion and used memory.

  • Bugfix: PartitionedMS handler does not handle an invalid WEIGHT_SPECTRUM column (reported by I. Heywood).

  • Bugfix: When reordering an MS, end with writing reordered model data back to measurement set, so that self-cal etc is still possible when using Cotton-Schwab cleaning.

  • Bugfix: -interval parameter does not work properly.

  • Bugfix: Documentation for -pol parameter is out-dated (reported by O. Smirnov, SF #3).

  • Bugfix: Remove temporary image files

André Offringa