At the CCLRC Molecular Spetcroscopy Facility, three high-sensitivity fibre-optic miniature spectrometers allow measurement of low intensity signals at near-infrared to ultraviolet wavelengths, fully covering the range 200 to 1100 nm with time-resolution of up to 3 milliseconds (10-3 s). One diode-array spectrometer operates between 350 and 850 nm at 1.2 nm resolution.