== For IRAF users ==
Since most observers seem to have their own scripts from the old version of the spectrograph, the easiest way to reduce the data is to use the QL wavelength calibrated outputs as a reference for an IRAF reduction of the raw data.
This assumes familiarity with reducing longslit data in IRAF. Phil Massey's guide is an excellent reference: http://iraf.noao.edu/iraf/ftp/iraf/docs/spect.ps.Z
i.e.