Welcome to the NavList Message Boards.


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

Compose Your Message

Add Images & Files
    Re: Thoughts on Celestial.
    From: David Fleming
    Date: 2012 Oct 29, 08:56 -0700

    I need to make a minor correction my last post.

    The intersection the cocked hat's angle bisectors is the fix for azimuths greater than 180d case but it is not the centroid of the triangle.

    Further I note that random errors can be reduced by averaging multiple readings if the measurement precision is greater ( more finely divided) than the random error deviation.

    This leaves systematic errors. For systematic errors common, ie the same in all measurements, by the inclusion of more independent measurements ( ie three or more sights ) than required for a fix we are able to measure that error and eliminate it from our fix.
    NavList message boards and member settings: www.fer3.com/NavList
    Members may optionally receive posts by email.
    To cancel email delivery, send a message to NoMail[at]fer3.com

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    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 Settings

    Posting Code:

    Custom Index

    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