NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: minus index corr better than plus
From: Aubrey O?Callaghan
Date: 2000 Jul 27, 09:32 EDT
From: Aubrey O?Callaghan
Date: 2000 Jul 27, 09:32 EDT
Dan, Why do you talk about getting it serviced ? This is an adjustment that the Navigator can make to the sextant. The text books say that one should not worry about a few minutes, to try and correct this. Correcting out small off/on the arc erros are called "worrying the sextant" and eventually end up with the adjusting screws becoming "loose". In any case we calulate out the small differences. Aubrey. ============== t 07:04 PM 26-07-00 -0700, you wrote: >On 25 Jul 2000, at 15:18, Russell Sher wrote: > >[Snip OFF/ON Stuff] > > > > If the error is on the arc Subtract it, if the error is off the arc ADD it. > > > >I just looked at my FREIBERGER Sextant. It has 5 degree marks below the >zero. If it was off more than that, I would not use it, but get it >serviced. What type of Sextant, with out marking below Zero are we talking >about??? > >Dan Hogan >dhhogan@XXX.XXX >NAV-L Web Page: http://nav.cnchost.com ================================================================= Aubrey O'Callaghan Wandrin' Star of Dart Rival 38 Contact: Venezuela, Puerto La Cruz 00-58-14 210 4625 (Cellular) 00-58-81 818 667
