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 May 1, 13:52 -0400
From: Alexandre Eremenko
Date: 2012 May 1, 13:52 -0400
Greg, > Don't get too excited over the 0.1' average intercept number. > I rounded all my readings to the nearest moa plus there are > uncertainties > of ± 1 second of time, ± 1 ft. height of eye, and ± 0.5' on index > correction. The horizon was very sharp as was the Sun's lower limb. It > wouldn't take much to shift the 0.1' average intercept to 1.0' moa. Now I understand your procedure even less:-) How exactly you rounded. That's why I asked you for the row data. As a mathematician, I am very surprized how can one extract something with 0.1 accuracy from the data which are 10-20 times less accurate, no matter how manhy observations you make. If you don't want to type all numbers type few of them. For example: time1 sextantreading1, time2 sextantreading2, and so on. I mean "as you recorded them". Plus DR coordinates and IC and whatever corrections you applied. Alex.