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
    Name or NavList Code:
    Email:
       
    Reply
    Re: Dual sight holes in antique octants?
    From: UNK
    Date: 2012 Feb 7, 09:20 -0800

    With apologies in advance to those who work only in brass, I removed the scope from my Nitto sextant, installed duct tape, put two 1/16" (1.6 mm) holes as far apart as I could, and looked at the full moon last night. I couldn't see any difference through the hole near the frame versus the hole further out.

    The Nitto is a bit odd in that its horizon mirror is half mirror and half nothing so there is no glass between my eye and the horizon. Even looking at half nothing and half reflected moon at the same time from either hole - no difference that I could see.
    I'll try again with my Davis sextant to see if the clear glass makes any difference.
    Regards, Noell
    ----------------------------------------------------------------
    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
    ----------------------------------------------------------------

    File:



       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

    Enter the email address associated with your NavList messages. Your NavList code will be emailed to you immediately.
    Email:

    Email Settings

    NavList ID 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