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
    Name or NavList Code:
    Email:
       
    Reply
    Re: Published, Shackleton and Worsley, Journey to South Georgia Island
    From: Robin Stuart
    Date: 2018 Dec 21, 12:11 -0800

    Ed,

         Thank you. Glad you enjoyed it. The occultation reductions in the log are all rather well labelled which I think would be essential when doing a calculation of this complexity manually. The occultation of 42 Librae on 24 June, 1915 was the first and has a bit more than the rest. It refers to “Close’s Text Book” and without that I think we might have been lost.

          While on the topic of this paper I would like to draw Navlisters’ attention to Appendix A. This is a transcript and replication of the navigation on the passage from the ice floe to Elephant Island. Their target had been sighted at the time they launched the boats so the celestial was mainly used to answer the question “Are we there yet?”. These are detached pages in relatively poor shape and we thought it was important that they be preserved in this way. Images are not included as they are not much to see. Unlike the pages in the other paper, not all the text was decipherable even with the help of Canterbury Museum staff on the spot,

    Regards,

    Robin

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    NavList is a community devoted to the preservation and practice of celestial navigation and other methods of traditional position-finding. We're a group of navigators, navigation enthusiasts and hobbyists, mathematicians and physicists, and historians interested in all aspects of navigation but primarily those techniques which are non-electronic.

    To post a message, if you are already signed up as a NavList member, start a new discussion or reply to any posted message and use your posting code (this is a simple low-security password assigned when you join). You may also join by posting. Your first on-topic messsage automatically makes you a member, and a posting code will be assigned and emailed to you for future posts.

    Uniquely, the NavList message boards also permit full interaction entirely by email. You can optionally receive individual posts or daily digests by email, and any member can post messages by email (bypassing the web site) by sending to our posting address which is "NavList@NavList.net". This functionality is similar to a traditional Internet mailing list: post by email, read by email, reply by email. Most members will prefer the web interface here for posting and replying to messages.

    NavList is more than an online community... more about that another day.

    © Copyright notice: please note that the rights to all messages and posts in this discussion group are held by their respective authors. No messages or text or images extracted from messages may be reproduced without the explicit consent of the message author. Email me, Frank Reed, if you have any questions.

    Join / Get NavList ID Code

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

    Enter the email address associated with your NavList messages. Your NavList code will be emailed to you immediately.
    Email:

    Email Settings

    NavList ID 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