metis_lms_trace_list
====================

MetisLMSEfficiency
++++++++++++++++++


Computes the grating efficiency (blaze function) for the METIS LMS.

The procedure is described in E-REP-ATC-MET-1016_1.0. For a given order
(determined by the central wavelength) the grating efficiency is modelled
as a squared sinc function of wavelength via the grating angle.


MetisLMSImageSlicer
+++++++++++++++++++


Treats the METIS LMS image slicer as an aperture mask effect.

This helps in building a ``FieldOfView`` object that combines the spatial
field of the slicer with the spectral range covered by the LMS setting.

The effect differs from its parent class ``ApertureMask`` in the
initialisation from the `Aperture List` extension of the trace file
`!OBS.trace_file`.


MetisLMSSpectralTraceList
+++++++++++++++++++++++++

SpectralTraceList for the METIS LM spectrograph.