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
    Full moon sights and lifeboat sextant accuracy
    From: Jing C
    Date: 2017 Oct 4, 15:50 -0700

    I was doing sights of the sun and moon on a dock yesterday, using a Davis Mk3 "lifeboat" sextant and was about 26 miles off as compared to GPS. So I was curious, for people who have used that sextant before, what kind of accuracies were you able to obtain?

    Also, I vaguely remember reading somewhere that taking sights of a full moon (as opposed to a crescent moon) was not recommended as it for some reason decreased accuracy. I can't seem to find a reference anywhere to this, does anyone know if this is true, and why?

    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