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: Cel nav in space
    From: Fred Hebard
    Date: 2005 Jan 4, 23:04 -0500

    On Jan 4, 2005, at 9:05 PM, Frank Reed wrote:
    
    > They could measure stars' positions relative to the axes of the
    > spacecraft. The goal was to get the spacecraft's absolute orientation.
    > Orientation is critical for rocket firings. Very early in the history
    > of space flight, people considered these instruments for actual
    > position fixing, but it's pointless (an amusing intellectual puzzle
    > nonetheless).
    >
    
    You could also measure the "altitude" above the earth.  I don't know
    that it was pointless to use a sextant for position fixing; rather,
    there were more efficient methods.
    
    
    

       
    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