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: HO 211 with Sadler method
    From: Frank Reed
    Date: 2016 Jul 29, 16:03 -0700

    David C, you wrote:
    "While trying to discover what the Sadler method is I came across a message in the Bayless/Modified Ageton thread that had an untitled document attached."

    Well, it's not "untitled". It's "Ageton_01.pdf", and here is the direct link to the file: http://fer3.com/arc/imgx/Ageton_01.pdf.

    You wondered:
    "The document explained the standard and Sadler methods. Glancing through the explanations I came across the expressions  log esc t  and  log ese dec. What are esc and ese?"

    It appears that a portion of that document has been a victim of what they used to call "OCR". Today it's just "text recognition". I believe that those cases where you see "log esc" and "log ese", you're looking at text which should have been rendered as log csc which, of course, would be the log cosecant of an angle (which is identical to the log of 1/sin of an angle, which is also identical to the negative of the log of the sine of an angle).

    To identify the message you were reading, you wrote:
    "Message was dated May 8 2016."

    You need to learn how to copy the URL (web address) of a web page in your browser! This is extremely handy, and to be honest it's really "Internet 101". Here is the address, linked, to the post you were apparently referrring to:

    Frank Reed

    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