NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Marty Lyons
Date: 2015 Jun 10, 14:33 -0700
I have read what is in the archives. I want to make a Bris, using two clear 2" x 4 1/4" lenses from a welding helmet and a #5 shaded lens. #5 seems to be a good compromise between seeing the horizon and protecting your eye. I realize that a #5 shade is not dark enough for direct viewing of the sun.
My questions:
1. Is it better to have as many reflections as practical to allow sights at many different times of day, rather than just two reflections?
2. Concerning the angles, is it better to have the reflections widely spaced so they move down to the horizon quicker therefore allowing a more accurate timing of the lower limb tangency?
3. Since these are reflections, is what appears to be the lower limbs actually that, or an upper limb in upside down?
