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
    Question on geocentric to heliocentric conversion
    From: G Becker
    Date: 2011 Jun 9, 21:33 -0700

    Hello, I mostly lurk here.. but I have a question.

    Today, I stuck a 1/2" rebar into the ground as a gnomon and recorded the bearing and distance of the shadows over a few hours time. I used a 3" robotic total station, so the bearings and distances are very accurate. What I am looking for is the heliocentric ease/west. I have the geocentric state plane coordinates for the gnomon, the height of the gnomon, the beginning mid and end times of measurements, and the geocentric bearings and distances of the shadows. Am I on a wild goose chase doing it this way, or can the heliocentric east/west direction be found with the information I provided. Please look at the attached 2 page pdf file for a the graphic information. Any comments would be appreciated.

    Thanks,
    George
    ----------------------------------------------------------------
    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
    ----------------------------------------------------------------

    File:

      
       
    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