Giotto experiment platform

Nearly all experiments are mounted on the lowest of the three platforms, the 'experiment platform'. There are 10 experiments on Giotto which were grouped in four categories: imaging (Halley Multicolour Camera), gas mass spectroscopy (NMS - Neutral Mass Spectrometer, IMS - Ion Mass Spectrometer), dust experiments (PIA - Particulate Impact Analyser, DID - Dust Impact Detection System, OPE - Optical Probe Experiment, also measuring gaseous emissions) and plasma experiments (JPA - Johnstone Plasma Analyser, RPA - Reme Plasma Analyser, EPA - Energetic Particles, MAG - Magnetometer).

Not all of these experiments survived the Halley encounter. Others cannot be used at Grigg-Skjelierup because they were designed specifically for the geometry of the encounter with Halley.