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
    or...
       
    Reply
    Re: Bubble horizon
    From: Paul Hirose
    Date: 2002 Dec 18, 13:18 -0800

    "Dr. Geoffrey Kolbe" wrote:
    >
    > To answer George Huxtable's question on the sort of accuracy one should
    > expect from a bubble sextant. I have a Link A-12 aircraft sextant (still
    > available from Celestaire, last time I looked,) and I would expect an
    > altitude measurement to be within +/- one minute. I am disappointed if I am
    > two minutes out and I cannot remember the last time I was more than two
    > minutes out.
    
    That is impressive. I have never done a serious accuracy test with
    mine, but I doubt I could match your performance. What are you
    shooting? Sun? Stars?
    
    Are you able to get batteries to fit the night illuminator? The ones
    I've tried are a shade too fat to go into the nose cap that holds the
    bulb. It seems C cell diameter has increased slightly since the 1940s,
    when the sextant was made.
    
    
    

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    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:

    Email Settings

    Posting 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