Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    Re: New inovation in astro navigation?
    From: Richard Reed
    Date: 2010 Aug 2, 12:58 -0700

    Here's a setup for deep space navigation that uses expensive digital cameras mounted on a kind of acceleration-sensitive yoke for attitude measurement. A gross angle is measured by the yoke, and the fine precision by DSLR's with big telephoto lenses.


    My opinion of 'electro-trickery' begins with immense respect for the recognition of the significance of double-reflection geometry and the progressive refinement of the precision available to hand in the sea environment. Also, if sextants were wonderful for this, what can you say about chronometers? It doesn't do to call them 'mechano-trickery', because for all the elegance of lunars, our failure to have a better natural clock than the Moon made mechanical timekeepers _necessary_. I guess trade would have progressed with all the shipwrecks anyway, but probably much more slowly.

    I forgive 'electro-trickery' for a lot of things. Do we need air transports? Forget all the fly-by-wire and flight management computers or even jet engines. To land an airplane when birds prefer to walk, you need eyes so much better than a bird that your lousy reflexes don't matter, and you have to see through clouds and fog -- electro-trickery in spades. A simpler example is ocean navigation in bad weather. The ocean approach to the English Channel from the south is fairly nasty in winter and full of ships. Best to have something better than light to steer or avoid others by.

    I'm still fascinated by the elegant beauty of CN, and apologise if I abuse the spirit of the list. I just think a lot of modern complications have their places.


    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

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    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 Settings

    Posting Code:

    Custom Index

    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