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: Polaris isn't so easy!
    From: Robert Eno
    Date: 2004 Apr 5, 12:51 -0400

    I can answer the question, re: backyard observations of Polaris: I have
    never been able to sight it using a reflective artificial horizon. I have
    gone so far as to raise the AH on a camera tripod to get it right up to my
    nose but Polaris is dim and the black glass sucks most of what little light
    is radiated by this star. Ditto for a pan of oil. I have never tried it with
    mercury which, one would think would be like a mirror, however, I doubt if
    you would have much more success with that stuff anyway.
    It is even difficult to view with a bubble attachment. About the only bubble
    sextant that I have had success in using to sight Polaris is the venerable
    RAE Mark IX-A. It's illumination system is much more conducive to viewing
    dim stars.
    ----- Original Message -----
    From: "Jim Thompson" 
    To: <>
    Sent: Monday, April 05, 2004 7:05 AM
    Subject: Polaris isn't so easy!
    > For the backyard: Does Polaris show up in an artifical horizon (pan of
    > Jim Thompson
    > jim2@jimthompson.net
    > www.jimthompson.net
    > Outgoing mail scanned by Norton Antivirus
    > -----------------------------------------

    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