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
    Name or NavList Code:
    Email:
       
    Reply
    Re: Equation for dip?
    From: Marcel Tschudin
    Date: 2006 Sep 26, 10:15 +0300


    On 9/26/06, Peter Fogg <peter.fogg@gmail.com> wrote:

    On 9/26/06, Andres Ruiz  wrote:
    >
    > Dip an other equations for calculated the corrections for sextant
    > altitude an obtain the observed altitude:
    > http://www.geocities.com/andresruizgonzalez/celestial/Ho.html

    Where is found:
    "D = 0.0293 * SQRT( h )
    where h is the height of the eye above the horizon in meters."

    So if the height of eye is, say, 3.5 metres;
    0.0293 * 1.8708 = 0.0548

    Is there something I'm missing here? Surely the correct answer is 3.3
    minutes of arc?

    60 * 0.055 = 3.3
    this means in on case the result is in minutes of arc and in the other case in degrees of arc.

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

    Enter the email address associated with your NavList messages. Your NavList code will be emailed to you immediately.
    Email:

    Email Settings

    NavList ID 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