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Welcome to the meas_simastrom wiki! Here is a quick tutorial to get started, including the setup of master versions of obs_cfht and meas_simastrom. The paths here reflects the workarea at CC-IN2P3.

1. Create a working directory and cd to it.
2. Initialize the LSST stack; make sure you use a recent enough version of gcc (>=4.6)
   source /usr/local/shared/bin/gcc464_env.sh
   source /sps/lsst/Library/stack_v11_0/loadLSST.bash
   setup pipe_tasks
3. Install master versions of the two packages in a subdirectory called e.g. my_package
   mkdir my_package
   cd my_package
   git clone https://github.com/lsst-france/meas_simastrom.git
   git clone https://github.com/lsst/obs_cfht.git
   #compile obs_cfht
   cd obs_cfht
   setup -k -r .
   scons (there is an innocuous runtime error when running the test executable)
   eups declare -r . -t <your login name>
   #compile meas_simastrom
   cd ../meas_simastrom
   setup -k -r .
   scons opt=3
   eups declare -r . -t <your login name>
4. Setup the LSST stack including the local versions of the packages
   setup obs_cfht -t fabio
   setup meas_simastrom -t <your login name>
   ln -s /sps/lsst/data/astrometry_net_data . (this contains a CFHT-Deep subdirectory)
   setup astrometry_net_data -t <your login name>
5. link the calexp output dataset to the local directory
   cd ../..
   ln -s /sps/lsst/data/CFHT/output output
6. Execute, with 2 options:

• use a visit list in a file run.list (exemple in /sps/lsst/dev/boutigny/CFHT/run.list) and execute simAstromTest.py output @run.list
• use the command line to define the visits to match astrometrically : simAstromTest.py output --id visit=845346 ccd=0..3 --id visit=849375 ccd=0..3 --id visit=849376 ccd=0..3