NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Centring Error Detector
From: Alexandre Eremenko
Date: 2007 Jan 13, 11:50 -0500
From: Alexandre Eremenko
Date: 2007 Jan 13, 11:50 -0500
The prism set has another very substantial advantage in comparison with Star or Lunar distances: one can combine it with Franks laser beam proposal. Then the testing becomes independent of the observer's eyes. Bill and I found recently Frank's laser beam method works reasobably well for checking the Index error. If we had a set of prizms we could check the whole arc in the same way. I suppose this method is superior to other methods of checking arc errors because it does not involve collimators or any sophisticated and expensive equipment, just a set of prisms. Alex --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---