These programs were designed for use with a fibre array on the Manchester Echelle Spectrometer (Meaburn et al 1984). The fibres effectively make it a multi-slit spectrometer, with the fibres gathered into three (for example) rows at the input to the spectrometer. The first task is to extract the data from the individual fibres, the data is then wavelength calibrated and combined into a three-dimensional array, simulating the relative positions of the input ends to the fibres. FIBSEP extracts the data from the individual fibres into what looks like a long-slit spectrum for each row of fibres (at their output end). ARC2D can then be used for the wavelength calibration, and FIB2CUBE will re-arrange them into the format required for FIBDISP (FIB2CUBE also created the results structure).
FIGARO A general data reduction system