SIM EXT
-------

The OU-SIM EXT intrument simulator (SIM_EXT) ingests data from the OU-SIM :ref:`WP-TU` (catalogues of stars and galaxies) and from the :term:`Mission Data Base` (telescope and instrument model, environment data). It shall produce focal plane images and catalogues of the external surveys to Euclid. The images shall be ingested in the :term:`EAS` and used by other :term:`PF`'s mainly MER for the images and LE3 for the catalogues. 

The EuclidExtSplit :term:`Processing Element` in SIM_EXT ingests input data products

* :ref:`SIMExtInputConfiguration`
* :ref:`SIMTrueUniverseOutput`
* :term:`Mission Data Base`

For the output, the resulting images created by SIM_EXT are formated to EXT data products 

* :ref:`DpdExtKidsRawScienceFrame` for KiDS
* :ref:`DpdExtDesRawFrame` for DES
* :ref:`DpdExtLssSingleVisitImage` for Rubin Telescope
* :ref:`DpdExtSingleEpochFrame` for the northern surveys (CFIS, JEDIS, PANSTARRS, WISHES)