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
    John Wesley Powell's 1869 Lunar Observations from Grand Canyon
    From: Stephen M Kerst
    Date: 2018 Sep 17, 11:58 -0700

    NAVLIST-

    What's special here is that the raw observations were published for the first time in the book 'First Through Grand Canyon' by Michael Ghiglieri  (2010).
    Richard Quartaroli, formerly a librarian at Northern Arizona University, transcribed Powell's notes for the appendix--but wrote that no one had yet been able to compute latitude and longitude from them--so they remained a mystery to be solved. On inspection, I saw that the observations were for the old historical navigation method used by Captain Cook, Lewis and Clark, and others--the method of Lunar Distances--for figuring longitude.
    Bruce Stark had done some work on this five years ago, but there may be no published results. 
       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a 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