WSClean version 2.10

Released 2020-07-15

WSClean 2.10 depends on IDG version 0.7 or newer.

Summary of changes: WSClean can now run on multiple nodes using MPI. Several new methods for calculating a-terms were added: position-delta screens, better kernel windowing, gridding with the VLA beam and joint deconvolution of multibeam/PAF systems (which was demonstrated using Apertif).

This is the last version that is released via SourceForge. Future development will move to GitLab: https://gitlab.com/aroffringa/wsclean.

Major & visible changes:

  • Support for distributed computing using MPI

  • Support for “position shift screens” (dldm-screens) during a-correction gridding

  • Support for joint deconvolution of PAF / multi-beam observations

  • More windowing options for a-correction kernels, defaults now to “raisen Hann”

  • The VLA beam has been implemented

  • Support imaging of multiple fields

  • Add parameter -multiscale-max-scales

  • Restore source component models using -restore-list

Bug fixes & other changes:

  • Properly weigh channels when averaging with user-set deconvolution channels.

  • WSClean could iterate infinitely when first multiscale scale is not 0

  • GCC 10 fixes

  • Improved error reporting

  • Fix inversion timing