NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Andrew Nikitin
Date: 2010 Dec 24, 19:02 -0800
George Huxtable wrote:
> "On the other hand, if you are not using formula and using plotting
> techniques to find fix, this means that your are probably using tables and
> recalculating az and Hc would double your work. So you should be diligent
> and spend your valuable time doing something more productive."
>
> I don't follow that logic. It depends if you are prepared to accept
> inferior results in some situations. A navigator using graphical techniques
> is likely to recognise those situations and reiterate. A user who is simply
> taking numbers from a computer may well be doing so blindly.
I will try to explain.
A navigator using plotting techniques introduces greater errors
which stem from these techniques (placing a ruler, drawing line along its
edge are not exact operations, especially on a small cluttered badly lit
table which rocks back and forth). Assuming your AP is within a degree,
the error introduced by Hilaire method would be smaller then the errors
introduced by the act of plotting lines. Doing second iteration would be
a waste of time.
> On quite another topic, Andrew Nikitin is a new name to me, and if I'm
> right, these are his first postings to Navlist. They show that he has a
> thoughtful turn of mind, and is knowledgeable about the very matters that
> we so enjoy arguing about on this list. May I offer a warm welcome to him,
> and hope we will see much more from his keyboard.
Thanks for kind words, George. I've been reading the list for a past few
years on and off and I make occasional post or two now and then.
I've learned a lot from this list. And it is a place like no other.
Andrew Nikitin
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