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: Brown-Nassau Spherical computer
    From: UNK
    Date: 2014 Dec 3, 19:11 -0000

    Thanks Rommel,

    That is basically the Luykx paper that started the whole thing and I’ve cited in my earlier postings, but many thanks for your help here. With Harri’s excellent computer generated scales /graphs and the Brown paper (1944) plus the photo of the original in the SI, I think we now have a working replica. And it works!

    Watch this space. I think this will turn out to be a very interesting forgotten device. Probably the easiest and quickest method of getting Hc from Lat, LAH and Dec.(faster and easier than the Bygrave)

    So far, I’m getting remarkably good results with a very basic prototype that took only minutes to make.(albeit with Harri’s wonderful graphs!). It is becoming my favourite device!

    Best wishes

    Francis

     

    From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf Of Rommel John Miller
    Sent: 03 December 2014 18:31
    To: francisupchurch---.com
    Subject: [NavList] Re: Brown-Nassau Spherical computer

     

    Interstingly enough this site from Starpath School in WA state which hosts the Navigator's Newletter archives covered the use of the Brown-Nassau SC in 1998. 

    Here's a link to the whole Newsletter, and the story on Brown-Nassua is about 10 pages in. 

    www.starpath.com/foundation/NN-vol-3.pdf

    Hope this helps and that I am not repeating information.

     

    View and reply to this message

       
    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