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: Malaspina
    From: Alexandre Eremenko
    Date: 2007 Oct 5, 19:40 -0400

    
    On Sat, 6 Oct 2007, George Huxtable wrote:
    
    > I was particularly interested in the
    > quintant, by Gabriel Wright of London,
    > which must be about the first
    > quintant ever. Its increased angular
    > range (144 degrees) over the sextant
    > (120) was really intended for taking
    > widely-spaced Sun lunars and for
    
    Is there a picture of this quintant somewhere on
    the Internet? I've seen several quintants in
    the book "Taking the stars" and in the museums and
    on e-bay. And it is frequently claimed that they
    were made for wide spaced Lunars.
    
    My own SNO has theoretical range 140 degrees which is
    closer to a quintant than to a sextant with 120
    or 125 degrees.
    
    And I tried several Lunars when the distance was more
    than 130. My experience shows that this is practically
    impossible with ordinary arrangement of the mirrors.
    I think this explains why quintants are relatively rare.
    
    Alex.
    
    
    --~--~---------~--~----~------------~-------~--~----~
    To post to this group, send email to NavList@fer3.com
    To unsubscribe, send email to NavList-unsubscribe@fer3.com
    -~----------~----~----~----~------~----~------~--~---
    
    

       
    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