![]() It was also not easy to detect what had happened. Tclean/savemodel: In tclean in CASA 6.2 and earlier, there were situations in which model visibilities were either not being saved to the MeasurementSet even when the savemodel parameter was turned on, or saved too many times. To support reprocessing of ALMA data, a return value has been added to the fixsyscaltimes script to indicate whether or not a fix has been applied. Smoothcal: Calibration tables produced by the accor task can now be smoothed using the smoothcal task. Note for ALMA users: ALMA users are recommended to continue using fixvis for correcting the position of a calibrator prior to standard calibration. Please see the phaseshift API task description for usage details. The parameters/syntax for phaseshift have changed slightly from fixvis. The native frame of the MS (normally J2000). If a different frame is specified, the PHASE_DIR column in the FIELD table will be updated to the corresponding coordinates of However, time dependent coordinate systems such as AZ-EL and ephemeris sources are not supported. The new phase center can be specified in a coordinate frame different from the input MS. The phaseshift task supersedes the task fixvis, which is less accurate. Phaseshift: A new task phaseshift supports shifting of the phase center by arbitrary amounts. It has a value of an empty string when that field is not present for that row in the SpectralWindow table. SDM_CORR_BIT contains the string representation of the correlationBit field from the appropriate of the SpectralWindow table of the ASDM (“BITS_2x2”, “BITS_3x3”, “BITS_4x4”). ![]() ![]() Importasdm: importasdm fills a new, non-standard column named SDM_CORR_BIT to the SPECTRAL_WINDOW table. Related parameters in the sdm tool are also deprecated and will be removed in a future release. importasdm has been able to import different SDM versions for years and exportasdm has produced the most recent version of the SDM for many releases, so these parameters have been ignored ( useversion) or produced irrelevant text ( showversion) for years. Importasdm/exportasdm: The useversion and showversion parameters of the importasdm and exportasdm tasks have been deprecated. The printed (and logged) paths to config.py and startup.py are now consistent with each other (either both relative or both absolute paths depending on the details of how casa was invoked at the time). Messages printed during casa startup are now logged as well as printed. The behavior of these tasks is unchanged by these changes. These tasks now get those values from the ctsys tool: plotms: nogui plotant: nogui, agg, pipeline. Two tasks were previously re-parsing the casa command line for those values. Three of the new config.py parameters are now stored in the ctsys tool for later use: nogui, agg, and pipeline. When used on the casa command line, that setting takes precedence over the equivalent parameter in config.py. New to config.py are: log2term, nologger, nologfile, nogui, colors, pipeline, agg, iplog, and user_site. Most of the casa command line options can instead be set within config.py. The combination of the patches makes it possible to run Mac OS 10.15 disk images on Macos 11.Ĭonfig.py: The following adjustments were made to config.py: Updated matplotlib version to 3.3.3 to prevent plotant crashes on Macos 11. Support for Mac OS 11 on x86 processors with Python 3.8 and 3.6įixed Casaviewer crashes on Macos 11. Mac OS 11: CASA 6.3 is compatible with certain versions of Mac OS 11 after the following implementations:
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