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
    or...
       
    Reply
    Re: Sight Reduction Formula
    From: Paul Hirose
    Date: 2003 Oct 19, 11:22 -0700

    George Huxtable wrote:
    >
    > example above). Rectangular to polar conversions are conventionally
    > intended to produce an angle which increases anticlockwise from the x-axis,
    > whereas we require an angle that increases clockwise from the y axis, so a
    > bit of thoughtful tinkering may be called for.
    
    One solution is to lie to the machine. Where it wants x, give it y,
    and vice versa. Leave the signs unchanged. That will generate azimuths
    increasing clockwise from zero at north.
    
    
    

       
    Reply
    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