MPS-atlas

[prajwal309]

I was having some trouble with loading mps-atlas using the new version of specutils (v.1.16.0). I had to modify the main.py in the following way to get it working:

        # Load `~speclib.Spectrum` object
        spec = Spectrum(
            spectral_axis=wave_lib * lib_wave_unit,
            flux=flux * lib_flux_unit,
        )
        # Ensure spectra are ordered correctly (problem for mps-atlas grid)
        idx_order = np.argsort(spec.wavelength)
        spec = Spectrum(
            spectral_axis=spec.wavelength[idx_order], flux=spec.flux[idx_order]
        )

Had to change it to:

    idx_order = np.argsort(wave_lib)
    # Load ~speclib.Spectrum` object
    spec = Spectrum(
            spectral_axis=wave_lib[idx_order]*lib_wave_unit,
            flux=flux[idx_order]*lib_flux_unit,
            )