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: Nasr
    From: Hewitt Schlereth
    Date: 2009 Mar 23, 09:28 -0400

    Oops! Ageton is HO 211, not HO 214.  -Hewitt
    
    On 3/23/09, Hewitt Schlereth  wrote:
    > What the NA method does is break the Navigational Triangle into two
    >  right spherical triangles. The first time you enter the table you put
    >  in known factors (Lat and LHA) to get the unknowns in one right
    >  triangle. Then use those now-knowns to solve for what you want (Hc and
    >  Z) which are in the second.
    >
    >  It helps a lot to have a sketch of the triangle to look at. This lets
    >  you see what parts of the triangles the letters (A, B, F, etc.) refer
    >  to. If you can, get a hold of Ageton (HO 214). The figure there is the
    >  one you want. Ageton uses different labels than the NA does, but if
    >  you read (patiently) paragraph 2 (Form of Tables) on page 284 of the
    >  almanac, you can re-label the figure and  see how it works.
    >
    >
    >  Hewitt
    >
    >
    >  On 3/23/09, Yanni Nikopoulos  wrote:
    >  >
    >  > Hello George, I would love to have a copy of those pages.
    >  > Thanks
    >  >  TURBO!!!!!cause bottles are for babies and superchargers blow!!!
    >  > Which would you rather have, go fast goodies or shiny shoes?
    >  > Your feet may look good, but if your engine blows up, you ain't going
    >  > anywhere.
    >  >
    >  > Yanni Marinated
    >  > S/V Princess Thalia
    >  > Columbia 8.7 #73
    >  > On the Hard
    >  > Mayo MD
    >  >
    >  >
    >  > ________________________________
    >  > From: George Huxtable 
    >  > To: NavList@fer3.com
    >  > Sent: Monday, March 23, 2009 5:39:28 AM
    >  > Subject: [NavList 7728] Re: NASR
    >  >
    >  >
    >  > Guy Schwartz asked-
    >  >
    >  > | I know how to reduce a sight using the Nautical Almanac Sight Reduction
    >  > | method, however I don't
    >  > |
    >  > | Understand what I am doing aside from following the recipe.
    >  > |
    >  > | Can anyone give me a easy to understand description of what each step is
    >  > | doing.
    >  >
    >  > ===================
    >  >
    >  > I think I have the answer to Guy's question. It's a paper in two parts, 7 A4
    >  > pages in all, which appeared in the spring and summer issues of "Navigator's
    >  > Newsletter", by P M Janiszek, who, as I understand it, was responsible for
    >  > these tables. I think, after reading those pages, Gay will feel that he
    >  > knows all that needs to be known about those tables, and perhaps a bit more.
    >  >
    >  > I have sent scans of those pages backstage to Guy, but won't publish them to
    >  > Navlist as they are copyright to the Newsletter. If anyone else would like
    >  > to refer to a copy, I'm happy to share; just ask.
    >  >
    >  > George.
    >  >
    >  >
    >  >
    >  >
    >  >
    >  >  >  >
    >  >
    >
    
    --~--~---------~--~----~------------~-------~--~----~
    Navigation List archive: www.fer3.com/arc
    To post, email NavList@fer3.com
    To , email NavList-@fer3.com
    -~----------~----~----~----~------~----~------~--~---
    
    

       
    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