Luna 1 was designed to impact the Moon, delivering two metallic pennants with the Soviet coat of arms that were included into its payload package. It also had six instruments to study the Moon and interplanetary space. The flux-gate magnetometer was triaxial and could measure ± 3000 gammas. It was designed to detect lunar magnetic fields. Two micrometeorite detectors, developed by Tatiana Nazarova of the Vernadsky Institute, were installed on the spacecraft. They each consisted of a metal plate with springs and could detect small impacts. Four ion traps, used to measure solar wind and plasma, were included. They were developed by Konstantin Gringauz. The scientific payload also included two gas-discharge Geiger counters, a sodium-iodide scintillation counter, and a Cherenkov detector. The upper stage of the rocket contained a scintillation counter and 1 kilogram (2. 2 lb) of sodium for a gas-dispersion experiment.