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: Bowditch (2002) Table 17
    From: Bill B
    Date: 2012 May 02, 01:34 -0400

    Gary
    
    I enjoyed the copy you sent, especially the method for removing possibly
    "fuzzy" IE's from the small angles often encountered with tables 15
    through 17. IE problems are proportionally much larger than body with
    attitudes.
    
    Summary: Take an on-the-arc observation with the bottom through the
    horizon glass and the top reflected, then take an off-the-arc reading
    with the top through the glass and the bottom reflected.  Average the
    two and voila, an angle not biased by any IE possible errors.
    
    Thanks
    
    Bill B
    
    
    
    On 5/1/2012 5:46 AM, Gary LaPook wrote:
    > Table 17 from the 2002 edition was also included in the 1938 edition as
    > table 11 and I have attached the explanation of its use from that
    > edition. It makes sense that this table had its main use for station
    > keeping in convoy, similar to the usage of the dip short of the horizon
    > table.
    
    
    
    
    
    

       
    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