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: Longitude by Sunrise example
    From: Örjan Sandström
    Date: 2012 Aug 6, 08:35 -0700

    it was done more or less at the spur of the moment, so no time for elaborate math, I just held it up and let line out till it covered sun, did some minute adjusting and then rotated 90° and tried to follow upper limb of sun until the peg's lower limb touched horizon.

    to put mildly I was somewhat surprised how accurate it was.
    I suspect it is unlikely to get such a good result if I repeat the experiment.
    I was even more surprised to see the 0' figure of the screen dump, guess I used different numbers in at least one place as I got another figure.
    this khamal was not as easy to use as a Bris but still got surprisingly accurate LOP.
    ----------------------------------------------------------------
    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
    ----------------------------------------------------------------

       
    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