.. _tweakreg:

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TWEAKREG: Image Alignment
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Combining images using ``AstroDrizzle`` requires that the WCS information in
the headers of each input image align to within sub-pixel accuracy.
The ``TweakReg`` task allows the user to align sets of images to each
other and/or to and external astrometric reference frame or image.

.. moduleauthor:: Warren Hack, Mihai Cara <help@stsci.edu>

.. automodule:: drizzlepac.tweakreg

.. autofunction:: TweakReg

.. autofunction:: help