Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Wandering Pole
    From: Frank Reed
    Date: 2016 Apr 27, 07:53 -0700

    Here's a very nice article by science author Trudy E. Bell on the small-scale motions of the pole: http://tbp.org/pubs/Features/Sp16Bell.pdf (sample attached below). These phenomena are all much too small to affect traditional celestial navigation, but high-precision positional astronomy that tries to determine an observer's position with GPS accuracy does have to worry about these small details.

    Frank Reed
    Clockwork Mapping / ReedNavigation.com
    Conanicut Island USA

    PS: My position today: 45.204° N, 123.145° W



    File:



       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.
    Email:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site