SP-424 The Voyage of Mariner 10

Fig. 7-6. The Mercury encounter presented problems for the imaging team because flyby would be over the dark hemisphere. The team had to photograph the planet going in to closest approach and then on the outward leg without being able to couple the two sets of pictures together because of limb foreshortening. In (a), an artist's concept of the encounter with Mercury is shown; (b) shows the TV sighting lines shortly before and after closest approach.

Fig. 7-6. The Mercury encounter presented problems for the imaging team because flyby would be over the dark hemisphere. The team had to photograph the planet going in to closest approach and then on the outward leg without being able to couple the two sets of pictures together because of limb foreshortening. In (a), an artist's concept of the encounter with Mercury is shown; (b) shows the TV sighting lines shortly before and after closest approach.

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