Convert ephemeris time to mission elapsed time (MET).
This function converts ET to spacecraft clock ticks and then to MET seconds.
This is the inverse of the MET to ET conversion process.
- Parameters:
et (Union[float, Collection[float]]) – Input ephemeris time value(s) to be converted to MET.
- Returns:
met – Mission elapsed time in seconds.
- Return type:
np.ndarray
