A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Francis Upchurch
Date: 2014 Nov 18, 22:56 -0800
They look fine to me.Very clear and easy to use.Congratulations on all this.
If interested, see my recent postings on the Brown-Nassau graphic circular rule for LOPs. I think this may be faster than the Bygrave and apparently accurate to 2.6' of arc. Nobody seems to have seen one of these, so I guess I'll just have to try and make one from the limited information in the 2 papers. Do you or anyone else have the knowledge/skills/time to produce computer generated quadrant curves based on the basic spherical trig equations cited in the Brown paper?
If I cannot get those, I'll try to use the graphs from the paper. Perhaps they can be edited with photoshop or other graphic software? Can anybody out there help?