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
    Parallactic Retardation - is it a virus?
    From: Bill Noyce
    Date: 2004 Jan 28, 15:36 -0500

    By the way, George (& Arthur), Henning Umland's site also has
    a nice explanation of lunar distances in Chapter 7, which
    concludes with this statement (where D[Lapp] is the apparent
    distance):
    
      The standard deviation of a time value obtained by lunar
    distance is inversely proportional to the rate of change of
    D[Lapp].... Finally, it should be mentioned that the rate of
    change of D[Lapp] (not D!) is also affected by atmospheric
    refraction and, even more, by the parallax of the moon [14].
    
    [14] The Lunar Distance Page, http://www.ld-DEADLINK-com
    
            -- Bill
    
    
    

       
    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