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: Summer Solstice
    From: Stan K
    Date: 2016 Dec 23, 09:38 -0500
    FYI, and FWIW, the United States Power Squadrons favors "limb touching".  From the artificial horizon section of an old Junior Navigation student manual:  "Your sun and moon sights will be more accurate if you bring the limbs into tangency rather than superimposing the images."

    The fact that John Karl doesn't mention the "limb touching" method surprises me, and it is something I should have picked up after reading the first printing of Celestial Navigation in the GPS Age.


    -----Original Message-----
    From: Paul Werner <NoReply_Werner@fer3.com>
    To: slk1000 <slk1000@aol.com>
    Sent: Fri, Dec 23, 2016 9:09 am
    Subject: [NavList] Re: Summer Solstice

    You haven’t missed anything. But I did. I use “centre coincidence ” when taking AH sun sights and had forgotten the other possibility, “limb touching”, though I now remember having read about it. I don’t know which to prefer. John Karl (Celestial Navigation in the GPS age) describes only the first method. Bowditch, 1958 and 1977, both.
    Thanks to Brad and Stan for clarifying messages.
    Paul Werner
    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