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  • Install the Docker Desktop from https://www.docker.com/products/docker-desktop . You can create a Docker account, but it is not a requirement.

  • Open Docker Desktop → Preferences… → General. Uncheck Use gRPC FUSE for file sharing. The Docker will take 100% of the CPU resources if this option is not disabled.

  • Open Docker Desktop → Preferences… → Experimental Features. Uncheck all features.

  • Install XQuartz for X11 forwarding from https://www.xquartz.org/

  • Open XQuartz → Preferences… → Security. Select Allow connections from network clients.

  • Install IRAF/Pyraf Docker container. These instructions assume that the container will be installed in $HOME. Please, modify them as needed for your installation directory.

  • Install dsimulator in the iraf_docker directory:

    • mkdir deimos

    • cd deimos

    • Download tarball containing dsimulator (deimos_rev0b.tar) from https://www.keck.hawaii.edu/realpublic/inst/deimos/dsim.html

    • mv ~/Downloades/deimos_rev0b.tar .

    • tar -xvf deimos_rev0b.tar

    • cd ..

    • Add the following two lines to $HOME/iraf_docker/login.cl

      • set deimos = "/home/iraf/data/deimos/"

      • task deimos = deimos$deimos.cl

    • Edit the path to the home$ directory on the $HOME/iraf_docker/login.cl

      • set     home            = "/home/iraf/data/"

    • There may be other options that you might want to set on the $HOME/iraf_docker/login.cl file, such as:

      • set     editor          = vi

      • set     stdimage        = imt4096

      • set     stdimcur        = stdimage

      • set     imtype          = "fits"

    • (Optional) Edit the pyraf2 script to mount your working data directory on a desired location within the Docker. This can be done by adding the following line to pyraf2:

      • -v $YOUR_LOCAL_WORKING_DIRECTORY:$DOCKER_MOUNT_POINT \

If you skip the last step, you will only have access to directories under the iraf_docker installation directory.

Running Pyraf in the container

  • Launch Pyraf:

    • cd $HOME/iraf_docker

    • ./pyraf2

  • The Pyraf prompt (-->) will appear in a few seconds.

  • The directory $HOME/iraf_docker will be mounted on /home/iraf/data.

    • pwd will show /home/iraf/data.

    • ls will show all the files and directories within your working data directory.

  • Change to your working data directory. Note that the working data directory should be under $HOME/iraf_docker, otherwise it will not be seen by Pyraf.

  • Load the deimos package, edit the dsimulator parameters and launch dsimulator

    • deimos

    • epar dsim

    • dsim

Important notes

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Notes on Pyraf

The saveParList() and setParList() methods in Pyraf can be used to save a parameter list in your working directory and and set it at a later time:

  • To save the current parameters: iraf.deimos.dsimulator.saveParList("myparams.par")

  • To set the parameters in myparams.par : iraf.deimos.dsimulator.setParList("myparams.par")

  • To set the parameters in myparams.par and launch dsimulator: iraf.deimos.dsimulator(ParList="myparams.par")

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For additional information about how to use Pyraf see:

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