Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    Re: d correction
    From: Frank Reed
    Date: 2010 Jan 29, 12:04 -0800

    Unfortunately, a copy of the message copied below was sent out to some NavList email recipients with scrambled headers and the subject obscured. For those of you who did not get a scrambled version, sorry for the duplication:

    "Hello. I am living in Hot Springs, Arkansas, and am studying
    celestial on my own. Have several books, including Bowditch.

    I am unclear about the so-called "d correction." It seems the d
    number in the dailt pages of the Nautical Almanac should really
    be called a "d factor" or something similar. Mary Blewitt's
    book says to use this d factor to get into Table 5 of H.O. 249.

    My confusion stems from no one else mentioning Table 5 (except
    H.O. 249 itself).

    Can/would someone explain to me, at the 8th grade level, about
    the d factor for sun, moon and planet shots.

    Thanks in advance. E-mail is fine (dickbash[at]bashlaw.com). You
    have a fine resource here. Hope I am accepted as a list member.


    Richard Bash
    Hot Springs, AR"
    NavList message boards and member settings: www.fer3.com/NavList
    Members may optionally receive posts by email.
    To cancel email delivery, send a message to NoMail[at]fer3.com

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    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 Settings

    Posting Code:

    Custom Index

    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