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
    Re: No DR position. How can you get an accurate celestial fix?
    From: John D. Howard
    Date: 2020 Jan 19, 09:41 -0800

    Robert,

    You can get a very good fix, after two or three steps.  We had a good thread about this several years back.  A video was posted showing a cel-nav sextant shot but no location.  Most people zoomed onto the site in three tries.  I used the middle of the USA as my first AP, using the intercept method saw the fix to the north and west.  Second try used Northern California as AP and saw the fix as north.  Third try the two LOPs crossed within a mile or so of the true fix.

    Try an AP in the middle of your ocean and I bet you will need only three plots.

    John H.

    Or, do like Sumner did and figure a time sight with different latitudes.  JDH

       
    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