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: Hav-Doniol Lat/Dec subtractions
    From: Michael Bradley
    Date: 2016 Oct 19, 14:22 -0700

    Greg, you wrote

    'Just subtract the smaller from the larger so that L+/- d is always positive.'

    Couldn't agree more. It's in the finest tradition of CN to avoid any negative numbers. But if I get to use Hav-Doniol for a class or in a presentation, I'll use the Lat ~ Dec naming for the operation, which is also in the finest traditions of CN .....

    Michael Bradley

       
    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