2 Acknowledgements

Thanks are due to Andrew Collier Cameron who has been the principal contributor of scripts using ECHOMOP and FIGARO on which §3.5 is based.

Horst Meyerdierks helped with some of the FIGARO based scripts.

The IRAF scripts are closely based upon scripts posted to the IRAF newsgroups by Francisco Valdes of the NOAO/IRAF group.

Pierre Maxted contributed a modified version of tracepoly called arcpoly for extracting the wavelength polynomials from ECHOMOP reduction structure files.