(new) see page 6
regarding the Constellation Illusion

ABSTRACT

What we would like to know is why the Moon changes size and by how much. As it turns out, we do not need to know the size (diameter) of the Moon at any one particular point. The solution is two-fold. The main point is that we must take into account the apparent movement of the Moon and the actual movement of the Observer along the Earth's surface. If both of these factors are not taken into account, the Moon Illusion cannot be solved. The formula for determining the size of the Moon on the western horizon is as follows: The size of the Moon depends on 1) the cumulative distance the Moon has traveled minus 2) the distance the Observer has traveled. If we subtract the two we get: (1.57-1=0.57) or 57%.

The most important thing to remember is that one must take into account the turning of the Earth, and consequently, the movement of the Observer, from east to west. No model has ever done that which is why all models have failed.
(updated 09-19-21)
There is also a constellation illusion. see page 6.