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: Assembling Sextant Optics
    From: Alexandre Eremenko
    Date: 2025 Apr 2, 07:42 -0700

    Let me correct myself. You say that the eyepiece F has treads on both sides. One side must be for the shade E. How dense is the shade? Can you see any normal objects through it? If you can, this is not a Sun shade, as I supposed in my first answer. Normally, the Kepler scope is used for the Sun and Galileo of twilight observations. If the shade is for the Galileo scope, it must be very light.

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join / Get 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