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: Halley's lunar knowledge.
    From: Frank Reed
    Date: 2007 Dec 02, 23:02 -0500

    Michael Daly, you wrote (to George):
    "Exactly how is what I wrote contrary to what you write?  There was no
    Nautical Almanac of reduced lunar data but there was raw data on lunar
    position.  That's what I wrote and that's what you wrote."
    
    It's a minor distinction, but you wrote that there were NO ephemerides, or
    at least that's what you appeared to be saying. George pointed out that
    there WERE ephemerides which were not as good as the later N.A. but still of
    some limited use for determining approximate longitudes. The existence of
    further raw data is of some interest but probably not for Halley's
    observations c.1700 (he had not yet accumulated enough data to make any
    difference by that date).
    
     -FER
    www.HistoricalAtlas.com/lunars
    
    
    --~--~---------~--~----~------------~-------~--~----~
    To post to this group, send email to NavList@fer3.com
    To unsubscribe, send email to NavList-unsubscribe@fer3.com
    -~----------~----~----~----~------~----~------~--~---
    
    

       
    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