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
    Re: Celestial navigation: easier basic principle?
    From: Bruce Cutting
    Date: 2020 Jan 26, 20:23 -0700

    I probably am using zenith incorrectly - essentially, what I was think
    about was MAX altitude which os clearly not the same.  Sorry
    Quoting Peter Monta :
    
    > Hi Bruce,
    >
    > Why is it unlikely that any bright star will be within an arc minute
    >> of zenith?
    >>
    >>
    > Now I'm thinking that you and/or the original poster may be using "zenith"
    > in the archaic sense of "at culmination".
    >
    > But if we're all talking about the zenith as "up", or "opposite the gravity
    > vector", then at any given place and time the bright stars, of which there
    > are only a few dozen or hundred, will be unlikely to find themselves that
    > close to the zenith.  It's just statistics.  There are about 70 million
    > square arcminutes in the hemisphere, if my arithmetic is right, so for one
    > of the 100 bright stars to be in the magic square at the zenith, it's like
    > winning the lottery.
    >
    > Cheers,
    > Peter
    >
    >
    > View and reply to this message:
    > http://fer3.com/arc/m2.aspx/Celestial-navigation-easier-basic-principle-PeterMonta-jan-2020-g46920
    
    
    
    

       
    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