NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Sextant parallax and index error determination
From: Jim Martin
Date: 2007 Nov 21, 14:40 -0800
From: Jim Martin
Date: 2007 Nov 21, 14:40 -0800
According to Nicholls's Concise Guide,sextant parallax becomes less than 1second of arc at a distance of 5nm. Jim Martin. On Nov 21, 9:42 am, Greg Rudzinskiwrote: > Question for NAVLIST- Is the sextant parallax baseline measured from > the center of the scope to the center of the index mirror? How far > should the visible horizon be when used as a reference for determining > index error? Bowditch offers no explanation. > > Greg Rudzinski --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---