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: New ways to create false horizons?
    From: Bill B
    Date: 2017 Jul 21, 17:23 -0400

    On 7/20/2017 11:23 PM, John D. Howard wrote:
    >   Pete,
    > I have gone low teck to make my AH.  On a camera tripod I mounted a
    > board, horzontal, and put a clear plastic tube filled with water in a
    > "U" shape.  Into the two ends I put a bright blue plastic balls.
    Ah yes, the old bunyip-on-a-board trick. :-) Ingenious. I've put a
    couple of drops of red food coloring in the ends of the tube for
    relatively long-distance single-handed use. I used it once to find the
    height of the scope's objective lens center relative to spot due south
    atop a neighbor's privacy fence from a permanent vantage point to do
    meridian passage sights. So far have not laid out out the base for
    pyramids with a water and a trench....
    I like the idea of plastic balls that float. May I ask what you used for
    the balls?

    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