I think the wire mesh expansion and contraction is not such a huge issue for a number of reasons. First of all, you will probably want to make observations whe

I think the wire mesh expansion and contraction is not such a huge issue for a number of reasons. First of all, you will probably want to make observations when not illuminated by the Sun, so that the receiver is shielded by the mass of the Moon from the Sun interference. Second, on the Moon there is no weather. You basically have only two conditions, it either is illuminated by the full sun or it is not (with some time while it is partly illuminated, but most of the time is just basically two temperatures). During night the temperature will be rather predictable for the entire length of the night. So I think the simplest solution would be to just use the telescope for about 50% of the time when its geometry is stable and is shielded from the Sun. It is not such a huge issue, the basic fact of this kind of telescope is that you can't steer it so you still rely on orbital mechanics of the body on which you place to move the part of the sky which it listens to. In this case even restricting to 50% of the time does not change much as it still requires 1 whole year to make observation of entire part of the sky it can observe.