NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Navy MK 5 Octant Using Natural Horizon
From: Alexandre Eremenko
Date: 2012 Apr 30, 19:57 -0400
From: Alexandre Eremenko
Date: 2012 Apr 30, 19:57 -0400
Greg, There is something I don't understand in your messag: > Preset micrometer- Intercept average 0.2' T with spread > (scatter) of 2.1' moa. What does the letter "T" mean after the 0.2' ? > Normal set micrometer- Intercept average 0.1' A with spread of 2.7' moa. What does the letter "A" mean after the 0.1' "Intercept average" means the "average error", correct? > Conclusions: > > A small improvement (+/- 0.3' moa) for single > observations can be realized by presetting the Navy MK 5 micrometer drum > to the even minute then waiting for horizon tangency. I don't see how your data imply this conclusion:-) I would interpret your data as showing that "there is no difference" whether you preset or not. And the last question: why do you have to preset to even minute? Why not to odd? The observations were made from land, I supose, and with natural horizon, correct? Alex.
