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: Equal altitude puzzle from a movie
    From: Frank Reed
    Date: 2016 Dec 6, 14:25 -0800

    Repeating myself...

    There is a movie scene (details later) where a navigator is observing Orion low near the horizon. Bellatrix is about 5° high. Betelgeuse and Mintaka are at exactly the same altitude, about 10° high. Given that the altitudes are the same within, let's say, 0.1°, and that the stars' altitudes are 10° +/-3° (just to put specific limits on it), what is your latitude? And what is the uncertainty in that latitude? This is a type of "latitude by double altitudes" but in this case it's a pair of identical altitudes observed at the same time.

    And this time with an image to illustrate.

    Frank Reed



    File:



       
    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