On Thursday, January 3, 2019 at 6:35:00 AM UTC-5, StarDust wrote:
https://www.youtube.com/watch?v=cNRsbwZ83rY

WOW! What a cool design for sat tracking?
Not portable though?

It lacks that third axis that allows the whole mess to rotate around the vertical. It's only about 1/4 complete.

Baker-Nunn:

http://phastt.net/wp-content/gallery...-world/59.jpeg