NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Star-star distances for arc error
From: Frank Reed
Date: 2009 Jun 25, 21:18 -0700
From: Frank Reed
Date: 2009 Jun 25, 21:18 -0700
Bill, you wrote: "I can tell you that no matter what the combination of scopes and sextants, our observations agreed within 0.1 to 0.2 minutes of an arc for any star pair, and we did find a strange spot on my sextant around the 90d mark that was a full minute off." That sounds like it's consistent with my experience and once again demonstrates that you can indeed use star-star distances to assess arc error. Not to belabor the point, but just to make sure I'm not mis-interpreted, there are other ways, potentially (and probably) somewhat more accurate than star-star distances, but they are not always as convenient --the stars are there any clear night. -FER --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
