Introduction
============

The SPE :term:`Processing Function` is in charge of measuring the spectroscopic redshift 
of astronomical objects observed with the NISP spectrograph. In addition to the redshift, 
a measure of the flux of the main emission lines and other several spectral features is performed.
To complete the process, an estimate of the accuracy and reliability of the measurements will be 
provided.

A classification is also given to disciminate astronomical source between stars, galaxies or QSO.

Inputs to the SPE :term:`Pipeline` are 1D combined spectra provided by the SIR Processing Function. 
This SIR product is defined over one MER tile (as defined by MER Processing Function).

The SPE Processing Function produces the :ref:`SPEPfOutputCatalog`. This SPE product is defined over one MER tile.