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1. 

   egger Member

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   A potent astronomical analog computer that takes advantage of the stereographic projection.
   
   https://en.wikipedia.org/wiki/Astrolabe

    

   egger, Jul 4, 2017

   #1

   1 person likes this.
3. 

   egger Member

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   Astrolabe primer.
   
   https://www.youtube.com/watch?v=syLviDATmts

    

   egger, Jul 4, 2017

   #2
5. 

   egger Member

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   Astrolabe generator for your particular location.
   
   http://astrolabeproject.com/build/astrolabe.html

    

   egger, Jul 4, 2017

   #3

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