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VLBICoord_2019Aug21_Minutes
(2019-08-22,
MarkKettenis
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Minutes in Bold
CASA/JIVE VLBI Coordination Meeting
2019 August 21 @ 1400UTC
Attendance: George, Justin, Mark, Des, Ryan
Logistics
Future Meeting dates (usually last Wed of the month):
NEXT Meeting: 2019 Oct 30, 1400 UTC
2019 Nov 27? (Will probably revise due to Thanksgiving, vacations, etc.)
General Admin
CASA 5.6.0 released 2019 Aug 08
CASA 6.0 pending
CASA 5.6.1 / ALMA pipeline release pending (mid-September)
EHT-related article planned for next newsletter, ~October
Contribution from Michael Janssen, via Ilse
(Mark) EHT polarization workshop: report
Workshop utilized EHTimager, LPCAL (AIPS), and Ivan Marti-Vidal's python version of LPCAL with CASA.
Data with parang already corrected, so not conditioned for standard CASA polarimetry processing.
Should discuss migration of Marti-Vidal's python LPCAL (resolved calibrator polarization fitting) into standard CASA
Mark has made some fixes in exportuvfits for mount types (for parallactic angle calculation).
Justin Linford now in Socorro (VLBA)
VLBA Stakeholder presence
(Ryan) CASA Next Generation Infrastructure
Trade study ~complete
Conceptual Design Review pending (~September)
Recently attended scipy conference; dask, python data frames
George/Ryan to ADASS in Groningen Oct 7-11
George to JIVE Oct 12-16ish.
Will discuss several items enumerated below.
Des to present VLBI poster. Other JIVE presentations include MS plotting and integrating CASA with Jupyter notebooks.
Other admin?
Development/Features
(Mark) Requirements collation
ConsolidatedRequirements
....Any news?
Living document, Mark adding text periodically
VLBI Integration branch: CAS-12325
Items for CASA 6.0
(Mark) fringefit task: coordinating with Bob Garwood. Ok?
Mark waiting for reply from Bob. Still time to finish up
Stakeholder inputs for CASA 5.7/6.1
See VLBI section
George has added notes. Will add some derived items to actual 5.7/6.1 delivery plan at:
CASA 5.7/6.1
Glendenning has requested VLBI work plan describing how/when CASA can replace AIPS (needed sometime during FY2020)
Items for CASA 5.7/6.1 (need CAS tickets for many of the following)
(George) Support correlation-dependent flagging, with user option (CAS-695).
(High 5.7 priority for GM)
(Mark) Spectral-line / astrometry support
Fringe fitting on a single channel (or multiple channels with delay turned off) (CAS-12553)
With a bit more work to refine, will deliver for 5.7.
Spectral window mapping issues (CAS-12591)
George to investigate caltable portability aspect of this issue further (5.7)
Also refFreq issues (will discuss in October, or before)
Updated EOP corrections
Ongoing investigation/development continues; should coordinate with fixvis, antpos and similar (Mark/George to discuss in October).
(Des) Dispersive term solve, including user control and an FFT-based option for estimating the dispersive term.
(Work continues for 5.7)
Must exist in code by end of year (funding progress report)
(George/Des) Convert CC tables to image or
ComponentList
for resolved model-setting
George/Des to discuss/develop in October
(Des) CAS-12485? fringefit weighting control
Need good use case for testing/validation.
Des exploring test data options at JIVE.
(Des) Wide bandwidth
(Work continues for 5.7)
Must exist in code by end of year (funding progress report)
(Des) Baseline stacking
(George) Per-scan interpolation option?
(George) Overlapping solution intervals?
(Walter) Advanced VLBA Amplitude calibration a la Walker memo from a few years ago?
Bandpass normalization flexibility: voltage vs. power
Verification/Validation/Documentation
(George) CAS-12591:
CTPatchedInterp
spectral window mapping bug
(see above)
Needs further investigation.... I suspect this requires additional work addressing differing spw populations in MS and
CalTable
(portability)
(Des) Michael Janssen has found a so-far unreproducible bug... Progress?
Related to peculiar GSL return codes....
(Mark) Will soon commit data to DR for fringefit verification tests; also scripts. Will coordinate with Darrel and Ville.
AOB?
--
GeorgeMoellenbrock
- 2019-08-21
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Topic revision: r2 - 2019-08-22,
MarkKettenis
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