CONAN._classes.load_lightcurves.contamination_factors
=====================================================

.. py:method:: CONAN._classes.load_lightcurves.contamination_factors(cont_ratio=0, verbose=True)

   add contamination factor for each unique filter defined in ``load_lightcurves()``.
   This is the sum of contaminating flux divided by the target star flux within the aperture.

   :param cont_ratio: ratio of contamination flux to target flux in aperture for each filter. The order of
                      list follows lc_obj._filnames. Very unlikely but if a single float/tuple is given
                      for several filters, same cont_ratio is used for all.
   :type cont_ratio: tuple, float;

   .. attribute:: _contfact_dict

      dictionary of contamination factors for each filter

      :type: dict;

   .. rubric:: Examples

   >>> lc_obj.contamination_factors(cont_ratio=0.1)  # fixed contamination ratio for all filters
   >>> lc_obj.contamination_factors(cont_ratio=[0.1,0.08])  # different contamination ratio for each filter
   >>> lc_obj.contamination_factors(cont_ratio=(0.1,0.01))  # normal prior for all filters