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: NavList and overblown precision in mathematical analysis
    From: David Pike
    Date: 2026 Jan 4, 08:46 -0800

    DavidC you wrote:  FWIIW we have just passed the Summer Solstice and an artificial horizon is not useable for much of the day (at lat 41).

    I sympathise with you, if it's not the edge of the bowl, next door's fence gets in the way.  It's slightly easier with a mirror, but even then, there's always some interested passer-by to get in the way and spoil the shot.  (It might be interesting to count how many organisations print their dhobi mark on the shot below most of whom have never been anywhere near the South Pole)  DaveP

    File:


       
    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