NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: sextant index error measurement
From: Bill B
Date: 2006 Nov 03, 00:22 -0500
From: Bill B
Date: 2006 Nov 03, 00:22 -0500
Paul wrote > From the vertical distance > between the telescope and index mirror, and the distance to the target, > you can compute the parallax. Add parallax to the sextant reading to > obtain index error. This is where I have failed in the past. How does one know the vertical distance between a moving point on the index mirror and the central axis of the scope? It seems quite the reverse. If you know the angle the sextant is set to, the distance to the target (from what point of the system?) AND the *exact* IE/IC you could compute the vertical distance. Bill --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
