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    Re: Computer generated Almanac
    From: Vic Fraenckel
    Date: 2003 Sep 8, 10:13 -0400

    Johan,
    
    I appreciate you answering my query.
    
    If you would be willing to share your code, it would be helpful for me.
    
    Regards,
    
    Vic
    
    ________________________________________________________
    
    Victor Fraenckel - The Windman                 vfraenc1{at}nycap.rr.com
    KC2GUI                                                      www.windsway.com
    
          Home of the WindReader Electronic Theodolite
                                   Read the WIND
    
    "Victory at all costs, victory in spite of all terror, victory however long
    and hard the road may be; for without victory there is no survival."
    - Winston [Leonard Spencer] Churchill (1874 - 1965)
    
    Dost thou not know, my son, with how little wisdom the world is governed?
    -Count Oxenstierna (ca 1620) to the young King Gustavus Adolphus
    
    ----- Original Message -----
    From: "Johan Linn?r" 
    To: 
    Sent: Monday, September 08, 2003 9:57 AM
    Subject: Re: Computer generated Almanac
    
    
    | Vic Fraenckel wrote:
    | > Loath as SOME users of this list are to introducing computers into
    celestial
    | > navigation, I would like to find someone that has used the "JPL
    Planetary
    | > and Lunar Ephemerides" data to actually produce a computer almanac. I
    would
    | > like to do so but am not sure how to proceed. I am NOT interested in
    getting
    | > the data via the many excellent Web based systems as accessing the web
    is
    | > NOT practical while at sea.
    | >
    | > Any enlightenment will be appreciated.
    |
    | In the mid 90-ies I used the JPL tables together with Novas-C (from
    | http://aa.usno.navy.mil ) but an older version than the current one. With
    a
    | little help of a small program from a polish astronomer (can't remember
    the
    | name) I had good success in making the same data as the Nautical Almanac.
    The
    | project came to a halt when I needed to focus on studies, and I also had
    some
    | troubles making a good looking printout of the data (I wanted it to look
    like
    | the pages in the NA). The whole idea was to make printouts available on
    the web
    | in the form of pdf-files or something for about a month at a time. Thus
    letting
    | cruisers who wanted to use the tables download them and print them out at
    any
    | internet caf? in the world for the months they needed. I even thought of
    making
    | the tables available through fax. I haven't even looked at it for a few
    years. I
    | used C as programming language and the operating system is GNU/Linux. It
    is
    | probably not critical as all the output was text. I have also recreated
    tha data
    | in condensed Ageton tables and even tried my hand at H.O. 249 Selected
    Stars
    | with some success. I keep wondering about the copyright of the design of
    the NA
    | and such publications - none is mentioned in the paper volumes I have.
    |
    | I hope this has enlightened you, or at least helped you see the light at
    the end
    | of the tunnel. I can find the code I used if you need more help.
    |
    | /johan
    | --
    
    
    

       
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