fixms.fix_ms_dir
================

.. py:module:: fixms.fix_ms_dir

.. autoapi-nested-parse::

   ASKAP utility - update the pointing centre of a beam in an MS.
       - Allows imaging by CASA or wsclean.

   ..
       !! processed by numpydoc !!


Attributes
----------

.. autoapisummary::

   fixms.fix_ms_dir.DEG2RAD
   fixms.fix_ms_dir.RAD2DEG
   fixms.fix_ms_dir.TQDM_OUT
   fixms.fix_ms_dir.__author__


Classes
-------

.. autoapisummary::

   fixms.fix_ms_dir.Skypos


Functions
---------

.. autoapisummary::

   fixms.fix_ms_dir._rotate_v_x
   fixms.fix_ms_dir._rotate_v_z
   fixms.fix_ms_dir._rotatev_y
   fixms.fix_ms_dir.beam_from_ms
   fixms.fix_ms_dir.cli
   fixms.fix_ms_dir.decs
   fixms.fix_ms_dir.decs_rad
   fixms.fix_ms_dir.fix_ms_dir
   fixms.fix_ms_dir.ras
   fixms.fix_ms_dir.ras_rad
   fixms.fix_ms_dir.restore_ms_dir


Module Contents
---------------

.. py:class:: Skypos(ra, dec, precra=def_precra, precdec=def_precde)

   
   Defines a class that works with spherical geometry, specifically points
   in a unit sphere, such as the sky.

   This is general spherical geometry, with little to tie it to astronomy. The
   exceptions are the naming of longitude and latitude as RA,Dec















   ..
       !! processed by numpydoc !!

   .. py:method:: __str__()


   .. py:method:: get_decs()


   .. py:method:: get_ras()


   .. py:method:: rotate_x(a)

      
      return a skypos determined by rotating self about the X-axis by
      angle a.
















      ..
          !! processed by numpydoc !!


   .. py:method:: rotate_y(a)

      
      return a skypos determined by rotating self about the X-axis by
      angle a.
















      ..
          !! processed by numpydoc !!


   .. py:method:: rotate_z(a)

      
      return a skypos determined by rotating self about the X-axis by
      angle a.
















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          !! processed by numpydoc !!


   .. py:method:: shift(delta_lon, delta_lat)

      
      Shift this direction (Skypos) in longitude and latitude.
      The longitude shift will be in radian units perpendicular to the direction to pole, along a great circle.

      :param float delta_lon: longitude (RA) offset in radians
      :param float delta_lat: latitude (DEC) offset in radians















      ..
          !! processed by numpydoc !!


   .. py:attribute:: _dvecx


   .. py:attribute:: _dvecy


   .. py:attribute:: _dvecz


   .. py:attribute:: _vec


   .. py:attribute:: decs
      :value: None



   .. py:attribute:: def_precde
      :value: 2



   .. py:attribute:: def_precra
      :value: 3



   .. py:attribute:: dn
      :value: 12



   .. py:attribute:: precdec
      :value: 2



   .. py:attribute:: precra
      :value: 3



   .. py:attribute:: ras
      :value: None



   .. py:attribute:: rn
      :value: 12



.. py:function:: _rotate_v_x(vec, a)

   
   Return a skypos determined by rotating vec about the X-axis by
   angle a.
















   ..
       !! processed by numpydoc !!

.. py:function:: _rotate_v_z(vec, a)

   
   Return a skypos determined by rotating vec about the Z-axis by
   angle a.
















   ..
       !! processed by numpydoc !!

.. py:function:: _rotatev_y(vec, a)

   
   Return a skypos determined by rotating vec about the Y-axis by
   angle a.
















   ..
       !! processed by numpydoc !!

.. py:function:: beam_from_ms(ms: str) -> int

   
   Work out which beam is in this MS
















   ..
       !! processed by numpydoc !!

.. py:function:: cli()

.. py:function:: decs(dec)

.. py:function:: decs_rad(dec_string)

   
   Convert declination string to radians
   :param dec_string: declination string (dd:mm:ss.ss)
   :type dec_string: str
   :return: declination in radians
   :rtype: float
















   ..
       !! processed by numpydoc !!

.. py:function:: fix_ms_dir(ms)

.. py:function:: ras(ra)

.. py:function:: ras_rad(ra_string)

   
   Convert right ascension string to radians
   :param ra_string: right ascension string (hh:mm:ss.ss)
   :type ra_string: str
   :return: right ascension in radians
   :rtype: float
















   ..
       !! processed by numpydoc !!

.. py:function:: restore_ms_dir(ms)

   
   Restore the direction to the ASKAPsoft standard.
















   ..
       !! processed by numpydoc !!

.. py:data:: DEG2RAD
   :value: 0.017453292519943295


.. py:data:: RAD2DEG
   :value: 57.29577951308232


.. py:data:: TQDM_OUT

.. py:data:: __author__
   :value: ['Emil Lenc', 'Alec Thomson']