.. _SHEKSBTraining:
  
Shear KSB Training
------------------

$SetSchemaPath she/euc-she-KsbTraining.xsd 
  
Data product name
=================
.. DataProductNameStart
   
$PrintDataProductName
   
.. DataProductNameEnd
   
Data product custodian
======================
.. DataProductCustodianStart
   
$PrintDataProductCustodian
   
.. DataProductCustodianEnd
      
Name of the Schema file
=======================
.. NameSchemaStart
   
$PrintSchemaFilename
   
.. NameSchemaEnd

Last Edited for DPDD Version
____________________________
.. DpddVersionTagStart

1.1

.. DpddVersionTagEnd
   
Data product elements
=====================
.. DataProductElementsStart

$PrintDataProductElements
  
.. DataProductElementsEnd
   
Processing Element(s) creating/using the data product
=====================================================
.. PECreatorStart

SHE
   
.. PECreatorEnd
   
Processing function using the data product
==========================================
.. PFUsingStart

SHE
   
.. PFUsingEnd
   
Detailed description of the data product
========================================
.. DetailedDescStart

An XML data product containing training data for the KSB shear measurement algorithm. This algorithm requires priors
on the unlensed shapes of galaxies in order to properly estimate errors, and so the training data is generated by
running the KSB algorithm on a reference set of images with minimal (or no) noise. The resulting shape measurements
are stored as the training data in a fits table with the following columns:

$PrintCatalog fit/euc-she.xml she.ksbTraining

The distinction we use between "Training" and "Calibration" data is that Training data is data which can be obtained
prior to any observations from Euclid (e.g. from Euclidized HST images), while Calibration data is obtained and updated
throughout the Euclid mission.
   
.. DetailedDescEnd