Spectra of ozone &ngr;3 emission in an auroral nighttime sky were obtained in the Spectral Infrared Interferometric Telescope experiment. High-quality hot band spectra reveal spectral structure not previously observable and provide a critical test of ozone radiance models. The limb radiance profile is in good agreement with previous data below ~95 km, but above this it falls off more rapidly. ¿ American Geophysical Union 1990