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: Basic celestial naviagtion using a scientific calculator
    From: Douglas Denny
    Date: 2010 Aug 13, 14:20 -0700

    I would suggest finding a 'simple' _programmable_ scientific calculator.

    I'm sorry I am not familiar with modern calculators to suggest a particular model, but there must be relatively cheap yet simplified programmable types available.

    This will, with a little practice which will be worthwhile, enable you to put in at least some simple expressions to reduce input difficulties such as DegreesMmSs into decimal degrees; and then to use simple programmed formulae to obtain your sight reductions without too much effort for programming or when in use.

    I do _not_ recommend the more complicated programmable calculators like the HP50G I use, which can be a nightmare until you are used to the special programming language.
    By coincidence, I am currently entering the Moon's basic orbital parameters from Meeus' book to obtain almanac data for the Moon for use as an 'eternal' almanac, but it takes ages to programme for this. (Sir Isaac Newton declared working on the equations for the Moon was the only thing that gave him a headache! - I know why now!)

    I have already done this for the Sun, Aries, stars, Julian Date, Equation of Time etc, which was quite easy. Once done though - there it is - always available in a hand-held device, (so long as the batteries work).

    Douglas Denny.
    Chichester. England.
    NavList message boards and member settings: www.fer3.com/NavList
    Members may optionally receive posts by email.
    To cancel email delivery, send a message to NoMail[at]fer3.com

    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