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: Ageton Classic Sight Reduction Table Prototype
    From: Stan K
    Date: 2015 Oct 25, 13:50 -0400

    How does this differ from the Ageton-Bayless compact version of H.O. 211?  I see you have sin and cos values, but I'm not sure why.  They are needed to create the A and B values, but are not used in the computation of intercept or azumuth.  I also see the B value has tenths, where Ageton-Bayless rounds to whole numbers.


    -----Original Message-----
    From: Greg Rudzinski <NoReply_Rudzinski@fer3.com>
    To: slk1000 <slk1000@aol.com>
    Sent: Sun, Oct 25, 2015 8:21 am
    Subject: [NavList] Ageton Classic Sight Reduction Table Prototype

    A prototype 1' sight reduction table (8 standard pages front and back) has been made using Ageton AB log cosecant secant values * 100,000  framed by the corresponding natural sine cosine values. Trials have gone very well. Fast and error free. A 10' wallet version is planned (1 page front and back). When all the bugs are out then a PDF will be posted. 
    Greg Rudzinski

    Attached File:

    (Classic-Ageton-Sight-Reducti.jpg: Open and save)

    Attached File:

    (Classic-Ageton-RIC-reduction.jpg: Open and save)

    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