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
    Positioning of 7 x 35mm monocular on Astra IIIB sextant
    From: Alan S
    Date: 2012 May 10, 10:28 -0700

    Re the above, any clarification, advice, suggestions would be appreciated.

    1. I have an Astra IIIB, which came with a 3.5 x 40mm straight scope. No problems with it, other than the sometimes questionable nature of my sextant technique.

    2. I recently purchased a 7 X 35 mm monocular. There is a dimensional difference between the mounting brackets on the two scopes which if you will bear with me on a semantic point, I will describe as "two tined forks". The length dimension of the monocular's fork is, as I measured it, 5/16" longer than the mounting fork on he straight scope.

    3. How should one position the monocular on the sextant so as to get a proper horizon image, respecting the dimensional difference betwween the mounting forks?

    Thanks.

    Alan
    ----------------------------------------------------------------
    NavList message boards and member settings: www.fer3.com/NavList
    Members may optionally receive posts by email.
    To cancel email delivery, send a message to NoMail[at]fer3.com
    ----------------------------------------------------------------

       
    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