An auroral ion charge spectrometer was flown into a hydrogen aurora on a Javelin sounding rocket launched from Churchill, Manitoba. The instrument contained an electrostatic analyzer which selected particles with incident energy per unit charge up to 20 keV/charge and an 80-kV power supply which accelerated these ions onto an array of solid state detectors. Ions tentatively identified as H+, He++, and O+ were detected from 225 to 820 km in altitude. The experiment did not discriminate between H+ and He+, or between O+, N+, and C+. Upper limits of highly charged heavy ion abundances have been set at 20% of the He++ and 0.15% of the H+. It is concluded that both terrestrial and solar wind sources play significant roles in auroral ion precipitation.