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: Azimuth Angle and the Time Diagrams
    From: Henry Halboth
    Date: 2015 Nov 28, 01:11 -0500
    Steve,

     A Time Diagram is drawn on the plane of the equinoctial (the parallel sphere), whereas the azimuth is measured on the plane of the horizon (the right sphere) - they cannot be both demonstrated on the same diagram, except by projection. I would suggest that you obtain, if possible, an old copy of Dutton's "Navigation & Nautica Astronomy", say the 5th edition or earlier, wherein you will find all this extensively dealt with.

    Henry 

    On Fri, Nov 27, 2015 at 4:40 PM, Steve E. Bryant <NoReply_Bryant@fer3.com> wrote:

    Dear Navlisters,

    I like to use  time diagrams to visualize the relationship between Longititude, LHA, GHA.

    Why is it that the azimuth angle, Zn, for a celestial body, in this case the sun, is not descernable on the time diagram?

    I'm speculating it might have something to do with measurements that can be represented wth two dimentional drawings and the three dimentional nature of the Zn; but, that is only a guess. I still can't conceptionalize any diffrence in the application.

    I have encluded a drawing to help represent my question.

    Thank you for your help.

    Steve



    Attached File:

    (Time-diagram-Zn-.pdf: Open and save or View online)


       
    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