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
    Name or NavList Code:
    Re: Lunar Calculation Presentation
    From: Geoffrey Kolbe
    Date: 2022 Sep 24, 10:26 -0700

    I have a couple (see image below of one) and they seem to be remarkably accurate. An averaged series of altitude shots of the sun off an AH are generally sub-minute in accuracy.

    For the sake of repetition, Alexander Eremenko, of this list, used a box sextant with great success for lunars. Being light and small, they are very easy to hold at the correct angle for doing lunars. And if you average a series of sights, you can get good accuracy, even without a telescope.

    They come up all the time on ebay, of course. The trick is to buy one that does not come from India, and look one where the the blacking and the varnish is generally in good condition. Also, look for screws that have not been mashed where someone took the thing apart at some point in the last hundred years!


    Browse Files

    Drop Files


    What is NavList?

    Get a NavList ID Code

    (please, no nicknames or handles)
    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 Settings

    NavList ID 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