CASA/JIVE VLBI Coordination Meeting

2020 June 24 @ 1400UTC


  • Future Meeting dates (usually last Wed of the month):
    • 2020 Jul 29 @ 1400 UTC (TBD wrt vacations...)
    • (2020 Aug 26 @ 1400 UTC, TBD wrt vacations...)

General Admin

  • General Status w.r.t. Coronavirus measures
    • NRAO/ALMA:
      • NRAO in North America now in Phase 1 of "Return to Full Operations" from June 8,
        • Ramping up on-site work, with strict protocols for site/lab/office safety
        • Science/computing staff settling in to work-from-home for the longer haul (considering internet bandwidth improvement options in Socorro)
        • VLA reconfigured to B-array, WIDAR correlator power infrastructure work completed, observations beginning soon....
        • RTFO Phase 2: Sep 5 - Dec 31, "Steady-state" in "New Normal", maybe some travel, F2F meetings; consider 2021+ according to conditions
      • ALMA (and Chile, in general) a few months behind North America, science operations unlikely to resume before ~Dec 2020.
      • Science/computing staff continuing work-at-home for now?
  • CASA Release Schedule
    • CASA 5.7/6.1: Almost ready to branch...
    • CASA 5.8/6.2: Planning complete.
  • (Mark) Requirements collation status?
    • Document (2020 May 07) in good shape: pdf
    • Plans for broader circulation, additional edits?
    • Coordination with costing spreadsheet?
  • (George) CASA VLBI Readiness
    • NRAO Users Committee: "VLBI support in CASA needs a higher priority to improve the health of the VLBA user community."
    • Tony Beasley seeking resources to support this.
  • (Ryan) CNGI Status
    • CNGI/ngCASA Conceptual Design Review: 2020 Jun 9-10 confluence page
      • CoDR "suspended" due to review scoping issues...
    • Will proceed with some more prototyping over the next few months
    • FYI: CNGI Development instructions
  • Pending admin issues
    • DIY casa5 tarball build instructions can be found here
    • casa6 build issues: formal instructions for plotms, CASAshell, casa5/6 co-exist, c++ unit tests in casa6
  • Upcoming meetings/workshops of relevance
    • Virtual NRAO Synthesis Imaging Workshop: Q&A Sessions: June 29 - July 17. George: "Calibration Q&A" on June 29.
    • JIVE VLBI Workshop 2020 Nov 2-6. Virtual, hopefully with an in-person component.
    • VLBI-specific sessions at European Astronomical Society Meeting on 2020 June 29: Session SS16
  • Other admin?


  • CASA 5.7/6.1: VLBI contribution complete
  • Processes
    • All VLBI-specific efforts to be documented with CASA effort; isolated via "VLBI@NRAO" and "VLBI@JIVE" JIRA labels.
    • Use "Release Notes" field to indicate current issues/status (appears in tables)
    • Use "Developer" field to indicate responsible developer(s), independent of assignee
  • CASA 5.8/6.2:
    • JIRA Status
      • CAS-12736: accor test needs some VLBI(A?) data for proper test
      • CAS-8537: gain curve:
        • Mark has working implementation
        • Do we need a (wider) review of the proposed GAINCURVE subtable? Add OBSERVATION_ID to table?
        • Caltables use 16 parameters (8 per-pol), so a polynomial of degree 7.
        • How to integrate into gencal?
      • Other:
        • George to study what is needed in plotms for fringefit (CASR-537; may not require significant effort from Pam)
        • George/Justin to coordinate initial testing on CASR-463 (TEC) to better characterize basic requirements (also CAS-13040 re TEC retrieval changes)


  • ?

-- GeorgeMoellenbrock - 2020-06-23
Topic revision: r2 - 2020-06-24, MarkKettenis
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