imap_processing.spice.spin.get_instrument_spin_phase

imap_processing.spice.spin.get_instrument_spin_phase(query_met_times: float | ndarray[tuple[int, ...], dtype[_ScalarType_co]], instrument: SpiceFrame) → float | ndarray[tuple[int, ...], dtype[_ScalarType_co]]

Get the instrument spin phase for the input query times.

Formula to calculate spin phase:

instrument_spin_phase = (spacecraft_spin_phase + instrument_spin_offset) % 1

Parameters:

• query_met_times (float or np.ndarray) – Query times in Mission Elapsed Time (MET).

• instrument (SpiceFrame) – Instrument frame to calculate spin phase for.

Returns:

spin_phase – Instrument spin phase for the input query times. Spin phase is a floating point number in the range [0, 1) corresponding to the spin angle / 360.

Return type:

float or np.ndarray