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: ? ? ? Re: Old style lunar
    From: Bruce Stark
    Date: 2004 Dec 10, 16:57 EST
    Alex,

    You wrote: "
    Just send 1 (one) page which does not have to be
    'dug out'. No matter which, for October 1800, or so."


    One page wouldn't do. The old almanac has divided into months, twelve pages per month. Data for a given day is in different places. The copy of Oct. 1800 fit into a regular business envelope, and is in the mailbox now.

    Here are some things you probably already know but I'll mention anyway:

    Positions of Jupiter's satellites are given for mean time. Everything else is for apparent time.

    The dates and hours are in astronomical time, which begins at noon and runs up to 24 hours. The date of noon is the same for civil, nautical, and astronomical time. But this same noon is the end of the sea day, the middle of the civil day, and the beginning of the astronomical day.

    Ecliptic longitude columns are headed: "S. D. M. S." The first "S" stands for signs of 30 degrees. The rest, of course, is degrees, minutes, and seconds of arc.

    If you, or anyone else, would like copies of other parts of the Almanacs to work with, please let me know.

    Bruce
       
    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)