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: 3-Star Fix - "Canned Survival Problem"
    From: Sean C
    Date: 2012 Mar 12, 21:38 -0700

    After reading about Gary J. LaPook's memory feat I had an idea: On the reverse of the COT scale of my Bygrave Slide Rule I printed the dip and altitude corrections (for stars), temp. & pressure corrections, the SHAs & Dec. of all 57 nav stars for 1 Jul., the GHA of Aries for 1 Jan. plus the daily/hourly increase & finally, the Bygrave instructions.

    Now I have a complete emergency almanac for the stars and sight reduction system on 1 & 1/4 pages. (I cut the COS scale down to 1/4 page to make it easy to slide around.)


    ------------------------Original Message------------------------------

    On 14 Jun 2008, Gary J. LaPook wrote:
    "Being the conscientious navigator that I am, I followed my usual practice of memorizing some data from the 2008 Nautical Almanac so that I would have it available for emergency use.[...]I also memorized the SHAs and the Declinations of ten of the navigation stars ( nobody could memorize all 57) which should be enough for emergency use as tabulated for July 1st so that the values will be reasonable for the whole year."

    I'm assuming you chose the stars based on a good distribution in the sky and also on magnitude. So which stars did you settle on? (And did you choose only for the northern or southern hemispheres or both?)
    ----------------------------------------------------------------
    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
    ----------------------------------------------------------------

    File:

      

       
    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