NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Index Correction
From: Alexandre Eremenko
Date: 2007 May 7, 15:52 -0400
From: Alexandre Eremenko
Date: 2007 May 7, 15:52 -0400
Fred wrote: > although I don't think it would account for a change of 0.7 > arcminutes. Alex avoids some of this source of error because he has > sighting wires in his scope. I don't think wires play any role in the usual IC checks with Sun or stars. Also, I don't think moderate side or collimation error can affect these IC checks. This is definitely so with the stars (some small side error even helps with the stars) and my computation also shows that side arror of few minutes also cannot affect IC checks with the Sun. In no way can these things create an effect so large as 0.7' in IC. Alex. --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
