===================== MultiTileDestripeStep ===================== **This step should only be run on NIRCam data!** This step uses information from all available tiles to correct any remaining 1/f noise. This is particularly important if you've filtered out diffuse emission in :doc:`SingleTileDestripeStep `, as this will leave large ripples untouched. This works by creating a mean image of the input tiles, and comparing each individual tile to this mean. The hope is that any remaining 1/f noise will be averaged out, so we can use this to cleanly separate source from instrumental noise. If you have a small number of dithers, or at shorter NIRCam wavelengths, we suggest turning ``do_large_scale = True`` with a ``large_scale_filter_scale`` of ~200. This may need to be tweaked per-dataset. In this case, after the first pass we perform the same average imaging, but smooth it perpendicular to the stripe direction, to hopefully remove any remaining ripples. We then compare each tile to this smoothed, stacked image. --- API --- .. autoclass:: pjpipe.MultiTileDestripeStep :members: :undoc-members: :noindex: