VLASS has a Status Review on May 9th. In April, they will test AWProjection (from ARD) with pointing offset corrections and with the mpicasa thread-leak fix. They have agreed in writing that this is all they will require for the review. We too will do internal level 2 tests. There are many additional development details to follow up on, but that will happen on regular CASA/ARD schedules.
Calibration and Flagging
CAS-11191 : Work on mosaic gridder for VLASS is on hold for now. We will decide if/when to commit the pointing correction fix (only). No stakeholder needs it for 5.5.
CAS-7210 : Update from Kumar ?
Image Analysis and Casacore
Update on the mpicasa thread-leak issue ? Fix needed asap for VLASS testing.
Ger van Diepen is working to remove the casacore container classes that are duplicated by the C++ Standard Template Library (STL) and replace them with the corresponding STL classes. He has submitted a pull request for these changes on GitHub. The removed classes include:
The initial attempt at removal of these classes has been completed on the branch for JIRA issue CAS-12364. While the departing casacore classes generally have the same behavior as the STL equivalents, there are some significant caveats:
std::list::insert is a no-op if the mapping already exists (no changes made!)
std::map has no default value
multiple std::list::iterator objects operating on the same list are not kept in sync
std::list has no numeric indexing
Developers who are responsible for the modified sections of code will be contacted (or get a JIRA ticket) to review these changes, add any tests that are required to verify that these changes are OK or (of course) adjust and refactor as needed or desired.
We should go one step further than casacore and remove our use of casacore::String, but this is yet to be done (and won't be done in the CASA 5.6 cycle)
We should also switch from using casacore shared pointers and threading constructs to STL shared pointers and C++11 direct support for threads
Build / Testing
Started level 2 tests for VLASS Imaging
Under Validation (issues remaining in validation for CASA 5.5)
BLOCKER CAS-7210 (CAS-4640) Connect imaging weight gridder ( TCLEAN producing arc-like noise patterns when imaging small chunks of data when robust<1 )
BLOCKER CAS-11868 Fix mosweight=True to use less memory (Federico has been testing for ALMA, VLASS has tested, getting VLA dataset to finish testing)
Need final okay on docs/release notes:
CAS-9108 Linear basis-specific 'Xf' (multi-scan) improvements (and several related polarization tickets) (merged; need final okay on docs. Bjorn?)
CAS-8087 Support plotting pointing direction (R.A.-Dec.) by plotms (finished, just waiting on finalized doc/release note)
CAS-10593 Make component list prediction with beam use frequency variation -- just needs doc updates, Kumar is on it
George: do you want to open new tickets for CAS-12168, CAS-9108/etc followup? Does CAS-12280/CAS-12237 need doc updates on cal library CASAdocs page?
not yet ready to validate but still desired in 5.5:
CAS-12368 add depreciation warning to clean
CAS-12302 Updating XML files of CASA tasks
pointing tables for awproject, Preshanth to do, not yet in a CAS ticket (?), CAS-7727? -- this is definitely for 5.6, correct?
Kana: status of tickets moving to PIPE?
User Liaison Updates
CASA Newsletter: deadline April 12. Confirmed articles (apart from usual): Parallal imaging (Sandra/Federico), CASA 6 (Darrell), CARTA (Kuo-Song) - other articles TBD
Single Dish Development
CAS-12049 replied to Sanjay's comment. looks reasonable.