qspec.cast_hyper_const  (  hyper_const = None  )[source]

Preprocess the hyperfine-structure constants.

Parameters:

hyper_constarray_like | None

The hyperfine-structure constants (A, B, C). Currently, constants up to the magnetic octupole order are supported. If hyper_const is a scalar, it is assumed to be the constant A and the other orders are 0 (MHz).

Returns:

outndarray

The hyperfine-structure constants as a 3d-vector.