Agenda

CASA/JIVE VLBI Coordination Meeting

Minutes in Bold

2019 December 11 @ 1500UTC

Attendance: George, Justin, Ryan, Mark, Des, Harro, Ilse

Logistics

  • Future Meeting dates (usually last Wed of the month):
    • NEXT MEETING: 2020 Jan 15 (1500UTC) (two weeks early)
    • 2020 February 26?
    • 2020 March 25?

General Admin

  • Recent/upcoming meetings:
  • CASA Newsletter: contribution re EHT from Michael Janssen, via Ilse; coordinated by Bjorn
    • Distributed 2019 Nov 21
  • Helpdesk access from JIVE ok?
    • Not yet! George to resolve at NRAO [2019Dec12: Helpdesk accounts added for Mark and Des by Heidi Medlin (gmoellen)]
  • New CASA git repository. See: casa6 Any issues?
    • Mostly ok for bare casa6.
    • Need plotms build instructions (George will ask Pam for details)
    • Unclear how to make CASAshell work (George will followup)
    • CASA5 build possible within casa6 repository structure (George to provide simple instructions)
    • Need instructions for running c++ unit (google) tests
  • Current VLBI Integration branch: CAS-12325
    • Will make new VLBI integration branch from new repository soon, modulo items that move out of CAS-12325 in current work
  • (Mark) Requirements collation ConsolidatedRequirements....Any news?
  • Work plan describing how/when CASA can replace AIPS (FY2020 NRAO/DMS Program Operating Plan)
  • Other admin?
    • Next DifX meeting (northern autumn) will be in CV or Socorro, so there is an opportunity for in-person work on CASA/VLBI

Development/Features

  • Items for CASA 5.7/6.1 (Stakeholder inputs).
    • NB: Feature freeze: 2019 Dec 15, some work trickling into January
    • (George, CAS-695) Support correlation-dependent flagging, with user option.
    • (George, CAS-12735) Frequency meta-info consolidiation (see also CAS-12553)
    • (Mark/George, CAS-12591) spwmap fix
    • (Des, CAS-12365,12653) Deploy dispersive term solve, including user term control
    • (George/Des, CAS-xxxxx) Convert CC tables to image or ComponentList for resolved model-setting
    • (Mark, CAS-8546) GAINCURVE definition, deployment of standardization (deployment --> 5.8/6.2)
    • (Des, CAS-12765) Wide bandwidth (deployment in CASA --> 5.8/6.2)
  • Items for future cycles (future stakeholders discussions should include these items, at least):
    • (George) Some version of this list (prioritized) will be forwarded to Urvashi/Jen for stakeholder process as our (VLBI development) impression of VLBI-related priorities
    • (George) Per-scan interpolation option?
    • (George) Overlapping solution intervals (CASR-467, CASR-468)?
    • (Mark) EOP. (Any news from Mark's Australia discussion w/ Deller/Brisken?)
      • (Mark) Basic plan is to formalize import of (DifX) correlator model, update EOP (or other, e.g., troposphere) part, and difference to obtain required delay calibration
    • (Des/George) PCAL (Des has ad hoc scripts, need updated prioritization from VLBA since this is not a high EVN priority)
      • (Justin) This is not a high priority at NRAO/VLBA in the near term
    • (George) Polarization calibration w/ resolved calibrators
    • (Des) CAS-12485? fringefit weighting control (test data options pending)
    • (Des) Baseline stacking?
    • Opacity for high-frequency VLBI, derived from Tsys(sec(z))
    • TEC
    • (Walter) Advanced VLBA Amplitude calibration a la Walker memo from a few years ago?
      • Bandpass normalization flexibility: voltage vs. power

Verification/Validation/Documentation

  • (Mark) MS concat bugfix on casacore github to CASA?
    • Desirable for 5.7/6.1; casacore github PR pending (M100 test issues?); will coordinate merge to CASA a la carte, if necessary

AOB?

-- GeorgeMoellenbrock - 2019-12-11
Topic revision: r3 - 2019-12-19, GeorgeMoellenbrock
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