'''This is the basic procedure of closing the focus loop.
''' 
   * Start the DMI pipeline with cycle time of 10 seconds (This should already be
     running if you are on trajectory).
   * Start the DMI metrology loop (this will set the DMI focus point).
'''''NOTE''': The DMI focus point is the distance where the focus will be held if you[[BR]]
activate the DMI metrology loop in the legacy tab.  If you need to manually set[[BR]]
this value you do so in the legacy tab by entering a value for Focus then clicking[[BR]]
the set button.  This will be the DMI distance we are guiding to in the case that [[BR]]
we are unable to guide on one of the operational wave front sensors and have activated[[BR]]
the DMI metrology loop.
''
   * RA will center a star on OWFS1 or OWFS2.
   * Null out tip/tilt offsets on the OWFS camera of choice.
   * Check that the X and Y offsets are nulled if not have the camera re-centered.
   * Start and activate the metrology loop on the OWFS camera of choice.
'''''NOTE''': By activating the metrology loop on the OWFS camera you are now guiding[[BR]]
focus.  This also continuously adjusts the DMI focus set point.
''
   * At the end of the trajectory or when cancelling a trajectory all guiding loops[[BR]]
     will be stopped but the DMI focus set point will still remain until you either[[BR]]
     set it manually or close the focus loop on an OWFS camera.