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: Historical question
    From: George Huxtable
    Date: 2004 Oct 23, 17:03 +0100

    Thanks to Alex Eremenko for digging out the following gem frem Norie's.
    
    >the following method by which one person can take a set of
    >observations without assistants: HAVING A GOOD QUADRANT TO TAKE
    >THE ALTITUDES AND A SEXTANT TO OBSERVE THE DISTANCES..."
    
    What edition of Norie was that in? In my 1900 edition, presumably much
    later than the one Alex was reading, the reference is only to a team of 3
    or 4 observers.
    
    To me, the suggestion that the single observer should pick up a quadrant
    for his altitudes, when he already has a perfectly good sextant to hand for
    the lunar distance, appears to be utter nonsense. I can think of no reason
    at all for such a procedure.
    
    It's perfectly true, however, that navigators would keep their best sextant
    (or even quintant) for their lunars, and an inferior instrument on
    occasions when only altitudes were being measured, and even a wooden
    quadrant was good enough. The measurements of altitude that were needed for
    correcting a lunar were particularly undemanding.
    
    However, for a one-man observation, once the sextant had been taken out of
    its box for the lunar distance, I can see no reason why a different
    instrument should be used for the altitudes. I agree with Alex. that it's a
    strange comment. Perhaps it's been cobbled together from earlier texts by
    someone (later than Norie himself) who didn't know what he was talking
    about. These things happen, all too often.
    
    George.
    
    
    
    
    
    ================================================================
    contact George Huxtable by email at george---.u-net.com, by phone at
    01865 820222 (from outside UK, +44 1865 820222), or by mail at 1 Sandy
    Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
    ================================================================
    
    
    

       
    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