Click here to download the tar-file.
Set the environment variable IDL_PATH in your shell. If you're using the bash, add
export IDL_PATH="/home/koehler/IDL/starfinder:$IDL_PATH"to your .bashrc.
If you're using tcsh, then add
setenv IDL_PATH "/home/koehler/IDL/starfinder:$IDL_PATH"to your .cshrc or .tcshrc.