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Pipeline overview
Note
These instructions are outdated and only valid for prefactor 3.2 or older. Please check the :doc:`recent instructions page<pipelineoverview>`.
Prefactor is organized in three major parts to process LOFAR data:
Pre-Facet-Calibrator- Processes the (amplitude-)calibrator to derive direction-independent corrections. See :ref:`calibrator_pipeline_old` for details.
Pre-Facet-Target- Transfers the direction-independent corrections to the target and does direction-independent calibration of the target. See :ref:`target_pipeline_old` for details.
Concatenate- Concatenates the single-subband target data retrieved from the LTA into bands suitable for further processing with the initial-subtract pipeline. See :ref:`concatenate_pipeline` for details.
Initial-Subtract- Images the full FoV (and 1st side-lobe), generating a sky-model and subtracting it from the visibilities. See :ref:`initsubtract_pipeline` for details.
Pre-Facet-Image- Images the full FoV using the full bandwidth. See :ref:`image_pipeline` for details.