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: N.A. Altitude Correction Table
    From: Dan Hogan
    Date: 2001 Apr 27, 2:33 PM

    On 27 Apr 2001, at 17:41, Herbert Prinz wrote:
    > Dear All,
    > I just realize that I don't understand the Altitude Correction Table 10�
    > to 90� for the Sun on page A2 in the Nautical Almanac.
    Well I'm no mathematician, but A2 is just a critical table you pluck a number
    > Does anybody know whether the exact formula (algorithm) that generates
    > this table has been published? I can't seem to reproduce it with the
    > calculator formulas given in the Almanac itself. Nor is it consistent
    > with the results I get when I correct the sun observation for refraction
    > by means of the star table and then apply horizontal parallax and
    > average SD according to season... What am I missing?
    Don't know where the exact formula would be, but the book that mos navigation
    programmers refer to is "Astronomical Algorithms by Jean Meeus ISBN 0-943396-
    35-2",printed in the US by William-Bell, Inc.
    > Best regards
    > Herbert Prinz (from 1368950/-4603950/4182550 ECEF)
    > P.S.
    > Speaking of the sun: Has anybody on the list observed it in the last few
    > days? Quite remarkable.

    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