CASA AOC Tutorial October 7, 2008

On October 7, 2008 we plan to hold a CASA Tutorial for AOC staff and interested visitors. Schedule (all times in MDT) 0900-1000: Introduction to CASA by Steve Myers in the AOC auditorium 1000-1600: The actual tutorial, using one of the supplied scripts as a starting point. AOC staff will use their own workstation. Visitors, please make sure to book a public machine in advance; here's how you do it. 1600-1700: Q&A session in the Cafeteria as part of Science Tea, or in the Auditorium (TBD) Instructions Select an area to work from, preferably a new subdirectory on a disk local to your workstation Copy the script(s) and data you are interested in to that area using the links in the section Links to Tutorials. To retrieve a script, right-click on its link and select 'Save link as' For data, you sometimes have the choice between downloading files individually or all combined in a gzipped tarfile. To retrieve data, left-click on its link which will open a window showing the directory containing the data. Then right-click on the data and use 'Save link as'. In case of a gzipped tar file, use gunzip to unzip and tar -xvf filename to retrieve the data files. The format of the data varies (e.g. VLA export or FITS), but the scripts will use the CASA task appropriate to the format Start CASA by typing casapy-test To run a tutorial, use the execfile command, e.g. for the VLA continuum tutorial, type: execfile('3c129_tutorial.py') after the CASA prompt. See, however, point 5 Initially, participants may want to run the whole tutorial. After that, we recommend going through the tutorial in order, task by task, e.g. by cutting and pasting sections of the script into the CASA command interpreter, and by experimenting with a variety of parameter settings Some tutorials run from beginning to end, without requiring user input. Others stop at times to allow interactive use, and require a carriage return to continue To exit CASA, type exit, quit, or control-D Links to tutorials VLA continuum tutorial --- 3C129 Script (3c129_tutorial.py) data (3C129 VLA Continuum data) VLA spectral line tutorial (new) --- NGC 2403 Script step 1 --- data loading and listing ( script2403_1.py) Script step 2 --- flagging and calibration ( script2403_2.py) Script step 3 --- continuum subtraction and imaging ( script2403_3.py) data (NGC2403 VLA HI Line data) BIMA spectral line tutorial --- NGC 4826 Script (ngc4826_tutorial.py) data (NGC4826 BIMA mm data) VLA spectral line tutorial (old) --- NGC 5921 Script (ngc5921_demo.py) data (NGC5921 21cm) VLA 6cm continuum tutorial --- Jupiter Script (jupiter6cm_demo.py) data ( Jupiter 6cm) Help A number of NRAO staff members are available for help. They include Steve Myers (general issues), Gustaaf van Moorsel (VLA spectral line), Crystal Brogan (spectral line), Debra Shepherd (BIMA data), Kumar Golap (imaging), George Moellenbrock (calibration), Sanjay Bhatnagar (VLA continuum), and David King (viewer).

Please send any comments or questions about CASA to casa-request@nrao.edu

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Modified on Monday, 06-Oct-2008 16:25:22 MDT