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On some computers CASA starts with an "Xvfb" error message. The "X virtual frame buffer" is only used by the viewer to transfer non-GUI outputs to the terminal. For most applications this is not really needed. But for a permanent fix, one may install x...
If you have data that were reduced or analyzed with the CASA software package, you may use the following CASA reference for the publication: McMullin, J. P., Waters, B., Schiebel, D., Young, W., & Golap, K. 2007, Astronomical Data Analysis Software an...
When running gencal to produce antenna offsets, the following warning and error may be generated: Executing: gencal() 2013-02-28 18:55:35 WARN gencal::::casa No offsets found for this MS *** Warning *** No offsets found. No caltable created. 2013-0...
CASA data repositories contain our current best knowledge of, e.g., observatory coordinates, leap seconds, ephemerides, calibrator models, etc. Every version of CASA contains the latest files. Sometimes, however, one may want to manually update the...
There is a known issue within the gencal task that when attempting to create Tsys calibration tables for WSRT data it will result in the error messages: SEVERE Calibrater Caught Exception: SYSCAL table is incomplete. Cannot proceed. SEVERE Exception...
When running gaincal in CASA 4.0 and higher on a dataset that was previously calibrated using an earlier version of CASA, the following error may be generated: Caught exception: RecordInterface: field numthreads is unknown This will cause the gainca...
In your home directory you have a directory called ~/.casa/ This directory contains a file called init.py that executes each time you start CASA, just before the prompt is displayed. You should used this file to edit variables and import modules you...
In datasets where the flux calibrator is a Solar System object, the expected calibrator flux is defined based both on brightness temperature spectra models and ephemeris information. The flux models are called by the 'standard' parameter in the setjy tas...
If you reported a CASA bug or requested a new feature through the helpdesk and were told the developers have been notified, you can check development team progress at http://casa.nrao.edu/hdtickets [1]. Search for your helpdesk ticket number in the ...
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