Interesting, I know for a fact they will claim once again its atmospheric distortion, but i'll look into that one it sounds interesting.
One of my arguments, which I actually thought of myself is regarding polaris and the southern cross. Since timelapses show stars rotating around polaris, and then in the southern hemisphere they rotate around the southern cross...how can that fit into the concept of a flat earth with a dome over it? At the hemisphere you would have a very odd looking star rotation, it blows their model to pieces, im amazed more people dont use it.
No answer whatsoever, off any flat earther yet, it cannot work on a flat plane, and they know that. Which leads me to believe they are in serious denial, or are being disingenuous