NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Time of meridian passage accuracy
From: James N Wilson
Date: 2009 Sep 26, 16:58 -0700
--~--~---------~--~----~------------~-------~--~----~
NavList message boards: www.fer3.com/arc
Or post by email to: NavList@fer3.com
To , email NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---
____________________________________________________________
From: James N Wilson
Date: 2009 Sep 26, 16:58 -0700
Antoine:
You stated:
Nothing new : this formula has already been posted here and it has been
taught for probably (almost and maybe more) one century now.
When I wrote my Navigation paper, I found nothing about the
phenomenon, and had to derive the equation. I later found a simplified version
of it was in the Admiralty Navigation Manual, which had been out of
print for decades.
Many ostensible teachers have ignored the effect of vessel motion and
declination change. And the "equal altitudes" method ignoring that is still
popular. It's quoted in the Davis manual.
Jim Wilson
--~--~---------~--~----~------------~-------~--~----~
NavList message boards: www.fer3.com/arc
Or post by email to: NavList@fer3.com
To , email NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---
____________________________________________________________
