code: def fov(self, values):
          
          if values is None:
              self._fov = None
          else:
              values = np.asanyarray(values, dtype=np.float64)
              if values.shape != (2,):
                  raise ValueError('focal length must be (2,) int')
              # assign passed values to FOV
              self._fov = values
              # fov overrides focal
              self._focal = None
docs: Set the field of view in degrees.
  
          Parameters
          -------------
          values : (2,) float
            Size of FOV to set in degrees