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: Freiberger sextant
    From: Alexandre Eremenko
    Date: 2012 Aug 13, 12:21 -0400

    Dear Jeremy,
    > I just took a ship from Anchorage Alaska to Singapore.
    I envy you:-) A cargo ship?
    > The biggest thing that bothered me was that the micrometer
    > drum had me interpolate within 1' incriments.  For a Lunarian, this is
    > quite unacceptable.  I want to interpolate at 0.1' or 0.2'.
    I am a Lunarian, in the sense that 99% of my observations
    are Lunars taken from land:-(
    I have an SNO-T which Freiberger people call "our clone"
    and I have absolutely no inconvenience reading the 1' drum to 0'1.
    However, SNO-T has a great feature which facilitates this:
    a strong magnifying glass.
    With this glass, it is easy to interpolate the 1'
    divisions to 0.1', even in twilight.
    The magnifying glass (and the drum itself) also has a luminous coating
    which allows you to read in comlete darkness, without any batteries
    or wires.
    In general, many features of this "Freiberger clone" look like if it was
    specially made for Lunar observations:-)

    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