NSX: NIRES Spectral eXtraction (Night Sky Spectra)
Sky Spectra for order 3(1.89-2.47)
Sky Spectra for order 4(1.42-1.86)
Sky Spectra for order 5(1.14-1.49)
Sky Spectra for order 6(0.95-1.24)
Sky Spectra for order 7(0.94-1.06)