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: ? ? ? Re: Lewis and Clark lunars: more 1803 Almanac data
    From: Bruce Stark
    Date: 2004 Apr 17, 12:24 EDT
    Would it be possible the captains were having trouble reading off the sextant vernier (or nonius, as it was sometimes called)? I've never used a vernier sextant, but remember other vernier devices being easy to misread. Someone with a vernier sextant divided to 15" might try setting it to the values those lunars should have gotten, and seeing if it would be possible to mistakenly read off the values that were recorded.

    Admittedly, this is grasping a straw.

    Bruce
       
    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)