First, conventional FT-IR technology is examined to see why bog standard instruments aren’t capable of very short scan times. This is followed by a literature review both to see what past efforts have to offer and to follow the path of invention that led to a novel FT-IR instrument. This flows naturally to a discussion of the design and operation and onto the first experimental results. These are only preliminary results - more than three-quarters of the interferograms that had been transformed up to August 1997 are shown in these slides. These aren’t selected data - they were the only data available at the time of ICOFTS 11.