This page describes the instructions to install and run dsimulator in a Docker container. The installation instructions and dsimulator utilization have been tested on macOS Big Sur v11.5.2.

Installation

• 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 XQuartz

• 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.

  • cd $HOME

  • git clone https://github.com/tepickering/iraf_docker.git

  • cd iraf_docker

  • ./build.sh

• 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

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")

For additional information about how to use Pyraf see:

• http://stsdas.stsci.edu/pyraf/doc.old/pyraf_tutorial/

• http://stsdas.stsci.edu/pyraf/doc.old/pyraf_guide/pyraf_guide.html