Rocket-borne spectroscopic observations of the ultraviolet aurora between 2100 ¿ and 2300 ¿ reveal bands from the N2 Lyman-Birge-Hopfield and Vegard-Kaplan systems. A strong feature at 2144 ¿ is identified as the quintet doublet of NII. This emission feature is shown from altitude profiles to have little if any quenching. |