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: Averaging
    From: Fred Hebard
    Date: 2004 Oct 20, 23:14 -0400

    On Oct 20, 2004, at 7:09 PM, Bill wrote:
    
    > My question, is there a rule of thumb that might indicate when
    > averages are
    > acceptable and when not.  For example, for error of .4' or less (due
    > totally to systematic errors from averaging) difference between
    > latitude and
    > declination, plus altitude should exceed 60d (or any other number that
    > the
    > gurus decide is reasonable?
    >
    
    Bill,
    
    I'm no guru, let me assure you, but as best as I can tell, as long as
    you're 10 minutes away from meridian passage, averages or a straight
    line are fine, regardless of declination and latitude.  This is for
    short periods, such as 5 minutes.
    
    Fred
    
    
    

       
    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