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The Kongsberg equipment delivered for the MIPAS instrument, laser unit and optical receiver, worked flawlessly onboard the ENVISAT satellite during its 10 years in orbit, twice its design lifetime. MIPAS was a Fourier Transform Interferometer for the measurement of geophysical parameters in the middle atmosphere (stratospheric chemistry, climatology and ozone layer). The laser metrology system, delivered by Kongsberg, was essential for the highly accurate data provided by the interferometer.