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: Old style lunar
    From: Alexandre Eremenko
    Date: 2004 Dec 9, 21:22 -0500

    On Thu, 9 Dec 2004, Frank Reed wrote:
    
    > +/- 1 arcsecond or better.
    
    Wow! I am planning to make some program like this myself
    (probably not very soon) so I will need your advise.
    You used Meeus book, "Astronomical Algorithms", correct?
    Did you put ALL terms of Chapter 47 into your program?
    
    Can you tell the time of an eclipse in some year BC with your
    program? With what accuracy?
    
    > There is also a complete Nautical Almanac from 1804
    > at the Mystic Seaport
    > Library web site with all of the preducted lunar
    > distances from that year if you
    > want to do some more comparisons.
    
    I will do it.
    Actually Chauvenet says that British almanac was in error
    of about 28" (sometimes) in 1850-s, and this was already discussed on
    this list. Anyway, it is very interesasting (at least to me)
    to see how the progress in mathematical Lunar theory in
    XIX cent can be expressed in numbers:-)
    
    Alex.
    
    
    

       
    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