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: On polar nav
    From: Peter Fogg
    Date: 2002 Sep 12, 12:55 +1000

    Good on you, Robert, you're a mine of information. But if the theodolite tripod
    can be detached from the rest then the instrument part is similar to a sextant
    (?) but would seem much more useful - no worries about a horizon or auxillary
    equipment to replace same, and the instrument could be left standing for the 24
    hour period under discussion; just swung around, kept level with its
    bubble-levels? The tripod is not much more cumbersome than a rifle, for
    example, which no self-respecting explorer would be seen without.
    
    Which led to another thought - how do you check for index error without a
    horizon?
    
    What a terrible thing, to talk about being dead wrong about Scott.
    
    Robert Eno wrote:
    
    > I can answer the last question:
    >
    > Theodolites are heavy instruments to lug around on a trip to the pole. But
    > most importantly, ever try to use one at -30 C?  It ain't fun, believe me. A
    > sextant is much easier and simpler, to work with under extreme conditions
    > and compared to a theodolite, a little more robust.
    >
    > I think, but am not entirely certain, that Scott took a theodolite with him.
    > I could be dead wrong though.
    >
    > cheers,
    >
    > Robert Eno
    >
    
    
    

       
    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