Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
    Re: An azimuth nomogram: what's under the hood?
    From: Robin Stuart
    Date: 2018 Mar 13, 12:17 -0700

    Tony,

          Correct, these are cartesian (x, y) pairs just as you describe it. Note that I was missing a minus sign in my previous post that strictly should have read:

    "The three scales can be produced by plotting the curves (0, sin d ), (-k cos L, cos2L) and (k cos Z, cos2Z) for some arbitrary k,"

    In the diagram you provided it looks like k is about 1/4,

    Regards,

    Robin

    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