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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Antoine Couëtte
Date: 2020 Mar 22, 12:07 -0700
RE : http://fer3.com/arc/m2.aspx/Index-error-vs-index-correction-Stuart-mar-2020-g47300
Hello Robin, we all agree on the sign and sense of Errors / Corrections. This is already an excellent point.
Your own langage is not my native langage, however ...
... I have immediately understood the following wording " 3.5.1 (a) the absolute error of x0 is Δx = x0 - x, x - x0 is the correction to x. " as meaning :
" 3.5.1 (a) the absolute error of x0 is Δx = x0 - x, [and as a result of this definition] x - x0 is the correction [starting from x0] to [reach/attain] x.
In addition to this, since "x" is not accurately / fully known yet at the beginning of the measuring process, it is logical to rather perform some modification (here a correction) onto your earliest and only known data at this stage which is x0.
Best Regards
Antoine
