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: d
    From: Mike Burkes
    Date: 2010 Jan 29, 12:54 -0800
    Sorry folks replace, daily with hourly.
    Mike B
     

    From: m_burkes@msn.com
    To: navlist@fer3.com
    Subject: [NavList] d
    Date: Fri, 29 Jan 2010 12:37:02 -0800

    Hi Richard, the "d" from the Almanac refers to the daily difference of the declination and is noted as "d value" to be entered in the "Increments and Corrections" table at rear of Almanac. The d correction is the desired number.  I believe Table 5 of HO 249 is an interpolation table and I am not familiar with it. I have Mary's book but cannot seem to find her reference to Table 5. In essence the "d" values of NA and 249 are unrelated. HTH and the Nav L folks are extremely knowledgable and feel free to ask away.
    Mike Burkes
    626-833-1521


    > 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.
    >
    >
    > Regards,
    >
    > Richard Bash
    > Hot Springs, AR
    >
    >
    >



    Hotmail: Trusted email with powerful SPAM protection. Sign up now.

    Hotmail: Powerful Free email with security by Microsoft. Get it now.
    =
       
    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