 Check out the bookstore at IRBS.com |
|
|
|
|||||
|
||||||
Subject: Re: accuracy of automatic celestial navigation
From: Rodney Myrvaagnes (rodneym@XXX.XXX)
Date: Sat Dec 07 2002 - 00:34:58 EST
On Sat, 7 Dec 2002 00:05:53 +0000, George Huxtable wrote:
>
>For those of us that sail our small craft out at sea, my opinion is that if
>we can achieve a precision of 2 min, we are doing pretty well. What do
>others think?
>
I haven't been able to do much better than that, except under
exceptionally smooth conditions. I am talking about boats in the 30-36
foot range. I have never tried a scope of greater than 3X, but I doubt
that it would help on boats that size.
I have a 1957 Kelvin-Hughes sextant. Other observations with a Davis Mk
10 have not been much worse, as long as I redid the index error between
shots to allow for the plastic moving with temperature.
Rodney Myrvaagnes NYC J36 Gjo/a
"Never eat more in a single day than your head weighs." --Jim Harrison
|