Satellite observations of the auroral emission spectrum between 800 and 1400 ¿ at 8 ¿ resolution are presented. The spectrum is dominated by lines of neutral and ionized oxygen and nitrogen and by N2 Birge-Hopfield and Lyman-Birge-Hopfield band emission. A number of bright lines, most notably the O II, 834 and the O I, 989 and 1304 ¿ features, are detectable at all zenith angles sampled by the spectrometer (30-150¿). The day auroral spectrum is dominated by atomic oxygen and nitrogen line emissions. The H I, 1216 ¿ Lyman alpha line is a prominent feature of many of the night and day auroral events.