  This paper presents the solution approach developed by the team
"theAntipodes" for the 11th Global Trajectory Optimization Competition
(GTOC11). The approach consists of four main blocks: 1) mothership chain
generation, 2) rendezvous table generation, 3) the dispatcher, and 4) the
refinement. Blocks 1 and 3 are purely combinatorial optimization problems that
select the asteroids to visit and allocate them to the Dyson ring stations. The
rendezvous table generation involves interpolating time-optimal transfers to
find all transfer opportunities between selected asteroids and the ring
stations. The dispatcher uses the data stored in the table and allocates the
asteroids to the Dyson ring stations optimally. The refinement ensures each
rendezvous trajectory meets the problem accuracy constraints and introduces
deep-space maneuvers to the mothership transfers. We provide the details of our
solution that, with a score of 5,992, was worth 3rd place.
