Difference between revisions of "VLBI Tutorials"

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== Tutorials for the Very Long Baseline Array ==
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== Tutorials for Very Long Baseline Interferometry ==
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CASA is offering increased VLBI support through a collaboration with the Joint Institute for VLBI ERIC (JIVE). The below VLBI CASA tutorials introduce the CASA environment and touch upon the visualization, calibration and imaging capabilities available, along with the scripting methods so that you can create your own calibration scripts for your own data.
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VLBI processing in CASA has been extensively tested with EVN and VLBA continuum data. Other use cases and telescopes are still being verified. Feedback on results (also successful ones) and missing or optimizing functionality is very welcome at casa_feedback_at_nrao.edu.
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For the Event Horizon Telescope (EHT) project, one of three certified pipelines is based on CASA. This 'rPicard' pipeline has since evolved into a generic all-purpose pipeline for VLBI processing. While rPicard is not supported by the CASA team, users can find more information in [https://arxiv.org/abs/1905.01905 this paper].
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== <font size = 3> '''CASA tutorials''' ==
 
== <font size = 3> '''CASA tutorials''' ==
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CASA tutorial: [http://www.jb.man.ac.uk/DARA/unit4/Workshops/EVN_continuum.html ENV Continuum Imaging & Calibration]
 
CASA tutorial: [http://www.jb.man.ac.uk/DARA/unit4/Workshops/EVN_continuum.html ENV Continuum Imaging & Calibration]
  
CASA tutorial: [http://http://www.jb.man.ac.uk/DARA/unit4/Workshops/Spectral_line.html EVN HI Spectral Line]
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CASA tutorial: [http://www.jb.man.ac.uk/DARA/unit4/Workshops/Spectral_line.html EVN HI Spectral Line]
  
<font size = 1>These CASA tutorials represent publicly available materials developed by scientists from the University of Manchester, the Joint Institute for VLBI ERIC (JIVE), and the University of Pretoria/SARAO through funding from Development in Africa with Radio Astronomy (DARA). The materials are based upon a workshop developed by Anita Richards (Uni. of Manchester) in 2016. The subsequent update has been conducted by Jack Radcliffe (SARAO/ Uni. of Pretoria) which has been influenced by Des Small's (JIVE) [http://jive.nl/~small/FringeFitting/n14c3_tutorial.html EVN CASA tutorial]. This [http://jive.nl/~small/FringeFitting/n14c3_tutorial.html EVN CASA tutorial] also mentions the step needed for pre-processing archiveal EVN data for use in CASA.
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Credits: These CASA tutorials represent publicly available materials developed by scientists from the University of Manchester, the Joint Institute for VLBI ERIC (JIVE), and the University of Pretoria/SARAO through funding from Development in Africa with Radio Astronomy (DARA). The materials are based upon a workshop developed by Anita Richards (University of Manchester) in 2016. The subsequent update has been conducted by Jack Radcliffe (SARAO/ University of Pretoria), which has been influenced by Des Small's (JIVE) [http://jive.nl/~small/FringeFitting/n14c3_tutorial.html EVN CASA tutorial], based on AIPS material provided by Minnie Mao. When starting with archival EVN observations, this [http://jive.nl/~small/FringeFitting/n14c3_tutorial.html EVN CASA tutorial] explains the required steps for converting the data into a Measurement Set (in the EVN Continuum tutorial these steps are not complete). Thanks to Ilse van Bemmel (JIVE) for making these materials available for the CASA Guides.
  
  
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== <font size = 3> '''AIPS tutorials''' ==
  
== <font size = 3> '''Old AIPS tutorials''' ==
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<font size = 2>
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While implementation of VLBI data processing is an ongoing effort in CASA, we also include below two AIPS tutorials on this topic.
  
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AIPS tutorial: [https://casaguides.nrao.edu/index.php/AIPS-Simple-Self-Cal Simple Self-Calibration]
 
AIPS tutorial: [https://casaguides.nrao.edu/index.php/AIPS-Simple-Self-Cal Simple Self-Calibration]
  
 
AIPS tutorial: [https://casaguides.nrao.edu/index.php/AIPS-Spectral_Lines_and_Astrometry Spectral Lines and Astrometry]
 
AIPS tutorial: [https://casaguides.nrao.edu/index.php/AIPS-Spectral_Lines_and_Astrometry Spectral Lines and Astrometry]

Latest revision as of 11:23, 21 October 2019

Tutorials for Very Long Baseline Interferometry

CASA is offering increased VLBI support through a collaboration with the Joint Institute for VLBI ERIC (JIVE). The below VLBI CASA tutorials introduce the CASA environment and touch upon the visualization, calibration and imaging capabilities available, along with the scripting methods so that you can create your own calibration scripts for your own data.

VLBI processing in CASA has been extensively tested with EVN and VLBA continuum data. Other use cases and telescopes are still being verified. Feedback on results (also successful ones) and missing or optimizing functionality is very welcome at casa_feedback_at_nrao.edu.

For the Event Horizon Telescope (EHT) project, one of three certified pipelines is based on CASA. This 'rPicard' pipeline has since evolved into a generic all-purpose pipeline for VLBI processing. While rPicard is not supported by the CASA team, users can find more information in this paper.


CASA tutorials

CASA tutorial: ENV Continuum Imaging & Calibration

CASA tutorial: EVN HI Spectral Line

Credits: These CASA tutorials represent publicly available materials developed by scientists from the University of Manchester, the Joint Institute for VLBI ERIC (JIVE), and the University of Pretoria/SARAO through funding from Development in Africa with Radio Astronomy (DARA). The materials are based upon a workshop developed by Anita Richards (University of Manchester) in 2016. The subsequent update has been conducted by Jack Radcliffe (SARAO/ University of Pretoria), which has been influenced by Des Small's (JIVE) EVN CASA tutorial, based on AIPS material provided by Minnie Mao. When starting with archival EVN observations, this EVN CASA tutorial explains the required steps for converting the data into a Measurement Set (in the EVN Continuum tutorial these steps are not complete). Thanks to Ilse van Bemmel (JIVE) for making these materials available for the CASA Guides.


AIPS tutorials

While implementation of VLBI data processing is an ongoing effort in CASA, we also include below two AIPS tutorials on this topic.

AIPS tutorial: Simple Self-Calibration

AIPS tutorial: Spectral Lines and Astrometry