A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Geoffrey Kolbe
Date: 2021 Feb 15, 09:52 -0800
As has been noted, there are many free downloads to enable you to make your own astrolabe, but I do agree with you that the best way to learn about stereographic projections and their application to astrolables is to draw it out yourself and I urge that you rediscover your old drawing board.
You were evidently at Imperial College about ten years before me - though I was up the road in the Physics Department. I think by then they would have taken a very dim view of throwing darts from the College buildings!