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KVN pipeline for maser

Last updated: 2018.11.20

Youngjoo Yun ( yjyun(at) )



The KVN pipeline for maser is a set of python scripts for the data reduction of the multi-frequency KVN observations toward the stellar maser sources. The KVN pipeline for maser can deal with only the single polarization observations.

Required packages


2. Obit and ParselTongue

  • Installation instructions for AIPS can be found here.
  • Installation instructions for Obit and ParselTongue can be found here.

3. Check the installed ParselTongue scripts (e.g. files in ~/local/parseltongue-2.3/bin/).

  • ~/local/parseltongue-2.3/bin/ParselTongue
  • ~/local/parseltongue-2.3/bin/ParselFileServer
  • ~/local/parseltongue-2.3/bin/ParselTongueServer
  • ~/local/parseltongue-2.3/bin/TVServer
  • Make sure Python can find the installed ParselTongue modules by checking the contents of the above files.

How to install and run

1. Extract .

  • KVN pipeline for maser consists of seven files.
    • input.txt
    • fring.input
    • levs.txt

2. Copy the each file into the proper locations as belows.

  • Pipeline path (e.g. ~/pipeline)
    • ~/pipeline/
    • ~/pipeline/
  • Work path (e.g. ~/reduction/p16sc04a)
    • ~/reduction/p16sc04a/
    • ~/reduction/p16sc04a/input.txt
    • ~/reduction/p16sc04a/fring.input
  • Result path (e.g. ~/reduction/p16sc04a/VY-CMA)
    • This directory is automatically created after the pipeline starts.
    • ~/reduction/p16sc04a/VY-CMA/
    • ~/reduction/p16sc04a/VY-CMA/levs.txt
    • These two files should be copied to result path after the pipeline process is complete.

3. Edit your shell environment (e.g. ~/.bashrc)

  • Append export PYTHONPATH=“~/pipeline:$PYTHONPATH”

4. Edit input.txt and fring.input.

  • The contents of these files should meet the purpose of a specific observation.

5. Edit

  • Append the ParselTongue path in the first line.
  • e.g. #!~/local/parseltongue-2.3/bin/ParselTongue

6. Run script in work path.

  • cd ~/reduction/p16sc04a/
  • chmod u+x
 ./ input.txt 

7. Plot the overlapped contour maps after the pipeline process is complete.

  • cd ~/reduction/p16sc04a/VY-CMA


Any questions and suggestions are welcome.


wg/pipeline_for_maser.1542696994.txt.gz · Last modified: 2019/04/11 10:23 (external edit)