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: Corrections for latitude when taking sights
    From: Steve E. Bryant
    Date: 2019 Mar 12, 13:22 -0700

    David,

    I complicated my simple question by referencing the time correction table relative to latitude and longitude.  I have an appreciation for the reasons why one would need to correct the Time for solar and lunar phenomena as a result of latitude & longitude.

    While the practice for reducing lunar and solar sights does not include correction due to position on the earth per se, I was wondering if there were some variations in sight reduction results relative to extreme positions of the observations, on the earth, of the sun and moon as they are in extreme positions of opposition either north or south or east and west of the observer.  Asked another way, and not to include atmospheric conditions or refraction, are lunar or solar sights more accurate if your observation position is closer to the equator and less so as you move toward the pole(s), or if your observation position for the sun, for example, were in the far western sky with the suns actual position to an extreme in the east?

    Steve

    35 33; 097 37

       
    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