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: Single-handed sights
    From: Robert Eno
    Date: 2007 Oct 22, 19:10 -0400

    I'm in Gary's camp. When I take my sight, I utter "Mark...one thousand, two
    thousand, three thousand.....", look at my watch and note the seconds, then
    subtract. Works quite well for me except in winter when it is dark and cold
    and I have fumble with lights and pulling up my parka sleeve to access my
    wristwatch. Then things get interesting. As for watch error, I have the rate
    of my watch's gain fairly well pegged so it is just a matter of applying the
    correction based on the number of days since I last set the watch to the NRC
    time signal.
    
    Or I just turn on my GPS and follow the arrow ;-)
    
    Robert
    
    
    
    ----- Original Message -----
    From: 
    To: "NavList" 
    Sent: Monday, October 22, 2007 3:48 PM
    Subject: [NavList 3483] Re: Single-handed sights
    
    
    >
    > Gary LaPook writes:
    >
    > I use the inverse of your method, I start counting seconds from the
    > time of the sight until I can look at my watch, never more than 3
    > seconds so less opportunity for the count to get off by any
    > significant amount. I use a digital watch that has a push button for
    > illumination at night. I check its error after the round of sights
    > using a more accurate watch or radio time signal.
    >
    > gl
    >
    > On Oct 22, 10:29 am, Lu Abel  wrote:
    >> Gary J. LaPook wrote:
    >> > Gary LaPook wrote:
    >>
    >> > I use one of those little hand held dictaphones. I put it in my shirt
    >> > pocket, start it recording and then just talk into it with the sextant
    >> > altitude and time.M uch easier than trying to juggle sextant, pencil
    >> > and
    >> > paper especially if taking many sights. Go below and play it back and
    >> > write down the figures.
    >>
    >> I think everyone's experience will be different, but at one point in
    >> learning celestial I took a lot of sights without a helper.
    >>
    >> How?  First, I pre-adjusted my sextant to be close to the expected Hs.
    >> Then I looked at my watch and noted time to the second.  Then I simply
    >> started counting one-one hundred, two-two hundred, ... while I adjusted
    >> my sextant to its final reading.  Then noted time and reading in my
    >> notebook.
    >>
    >> With this method, you should be able to get a sextant reading within 15
    >> to 20 seconds of starting counting.  I did a few trial runs of simply my
    >> time counting to make sure I wasn't counting too fast or slow.  I
    >> believe that even after 30 seconds I was within one second or less.
    >>
    >> I was taking sights from a known position and my readings were no less
    >> accurate than what I got when using a helper on previous expeditions.
    >>
    >> Lu Abel
    >
    >
    > >
    >
    
    
    
    --~--~---------~--~----~------------~-------~--~----~
    To post to this group, send email to NavList@fer3.com
    To unsubscribe, send email to NavList-unsubscribe@fer3.com
    -~----------~----~----~----~------~----~------~--~---
    
    

       
    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