Aberration of the position of the stars

Aberration of the position of the stars all all objet in the universe (like this horse in this prairy).
Physicists understand and accept (at least I hope so)
the notion of aberration of the position of the stars (although I am not sure that they fully understood its meaning, because I have seen some who made rotations instead of a translation in x).
I explained, a very long time ago, how it should be done,
and although all this is very simple, I saw with astonishment that not only did people not understand, but that in addition, they spat on me.
I recall here, with a small diagram how it works.
Here, two observers cross paths, and start their watch.
At the instant t'=t=0 this is what they perceive.
Poincaré-Lorentz transformations ---> directly :
 <http://nemoweb.net/jntp?OKD4SGPiCabkfWou0VHeS__B_J0@jntp/Data.Media:1>
R.H.