Sensor field of view for the south sensor (top left panel) and the ecliptic sensor (all other panels) from Grün et al. (1980). The centre (coordinates [0,0]) is the direction of the sensor boresight. The numbers at the contour lines give the sensitive area of the sensor target in square centimetres, which depends on the particle impact direction. The simulated impact directions of the cometary trail particles (blue dots), and particles orbiting the Sun on circular orbits at Venus’ orbit (black cross) are superimposed for the sensor pointing at the impact time of the dust particle; see also Fig. 7.