Midcourse Space Experiment/Ultraviolet and Visible Imaging and Spectrographic Imaging limb observations of combined proton/hydrogen/electron aurora

Simultaneous measurements of auroral limb H Lyman a:, H Balmer ct, H Balmer beta, N-2(+) 1 NG 391.4-nm, and N-2 2 PG 337.1-nm emissions excited by com bined proton/hydrogen/electron precipitation are reported. The data were re corded by the Ultraviolet and Visible Imaging and Spectrographic Imaging (U VISI) spectrographic imagers on the Midcourse Space Experiment (MSX) satell ite on November 10, 1996, while viewing a diffuse emission region during a limb-scanning data collection event. Energy fluxes associated with the elec tron and proton/hydrogen precipitation components are estimated with one-di mensional fits to selected limb profiles using a transport-theoretic model. Spectral radiances (110-900 nm) are also presented. The data presented her e are but one example of the large number of MSX/UVISI data sets that have been collected offering opportunities for scientific investigations of auro ral emission phenomena and for retrieval of composition and particle precip itation parameters from optical remote sensing data.