An expert forum slider seems to want to bury this.
https://www.youtube.com/watch?v=aYPJ3gGQhPU
https://www.youtube.com/watch?v=vVTLDtaQSL8
https://www.youtube.com/watch?v=EM5lM5WEY3Q
4 video's not.
https://www.youtube.com/watch?v=RYmI-wh_R24
North pole and South pole 2 different sky charts that can't be seen without traveling from the northern hemisphere to the southern hemisphere.