Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    Re: Re Re: Dream Choice of Sextant
    From: Alexandre Eremenko
    Date: 2005 Aug 12, 17:12 -0500

    I did not understand from this exchange,
    what exactly is the advantage of titanium as
    a material for a sextant frame.
    I understand its advantages as a material for eyeglass
    frame: it is stronger than steel of the same weight.
    But what can happen to a sextant frame, why should it be
    so terribly strong? You are not going to drop your dream
    sextant on a concrete floor. And even if you do, it is much likely
    that you destroy the mirrors and the telescope, but not the frame.
    Simply speaking, don't you think that a brass or aluminium frame
    of modern sextants is already strong enough?
    On Fri, 12 Aug 2005, Jared Sherman wrote:
    > Until the breakup of the USSR most titanium was terribly expensive.
    > IIRC they controlled the largest production sources? And it was
    > considered a strategic defense resource by all parties. Now, it is
    > simply
    > expensive--and still terribly expensive to work. If the properties are
    > right it might make a dream sextant but the kind we'd only see offered
    > in the Nieman Marcus Christmas Catalog.

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    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 Settings

    Posting Code:

    Custom Index

    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