NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Do We Still Need to Use Sextants?
From: Norm Goldblatt
Date: 2013 Apr 8, 13:23 -0700
From: Norm Goldblatt
Date: 2013 Apr 8, 13:23 -0700
The vertical seems to be determined by the coarsest of zeroing, against a 1/4 20 bolt as a stop. Yes, it's land based. It's an astronomical telescope.
To calibrate it, you need only find 2 identifiable stars. And it WORKS! Is it possible to determine vertical in this way? If so, then vertical is not needed, ironically. That must be the sort of geometry the theodolite uses, no?
Norm
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