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    Re: almanac software
    From: Jay Borseth
    Date: 2002 Mar 8, 09:15 -0800

    I've developed a celestial navigation and star chart product using Novas
    and the JPL DE405 database for the PocketPC (www.nomadelectronics.com)
    which you may find of interest.  As a neophyte, I found the limited
    Novas documentation pretty opaque, but a book which helped to make sense
    of it all was "Fundamental Ephemeris Computations For Use with JPL
    Data", Paul J. Heafner, William Bell, Inc. 1999.
    Jay Alan Borseth            jaybo{at}nomadelectronics.com
    2419 East Helen Street      http://www.nomadelectronics.com
    Seattle, WA  98112         (206) 329-6327
    -----Original Message-----
    From: Navigation Mailing List
    [mailto:NAVIGATION-L{at}LISTSERV.WEBKAHUNA.COM] On Behalf Of Hal Mueller
    Sent: Thursday, March 07, 2002 11:44 PM
    Subject: Re: almanac software
    At 10:57 PM -0800 3/7/02, Cliff Sojourner wrote:
    >ok, I have to ask:  is there any source code for nautical almanac
    >software available?  I have searched high and low in marine, air,
    >navigation, and astronomy areas, but all I can find are some commercial
    >programs, and a few people's pet projects.  what are those programs
    >based on?  I suppose as a last resort I could ask one of the private
    >parties to share.
    http://aa.usno.navy.mil/software/novas/novas_c/novasc_info.html is the
    source code for the US Naval Observatory's positional astronomy package.
    It's a good start toward almanac software, although you'll have to
    supply your own code for planetary positions, and it's really designed
    for astronomers and not navigators.  C and Fortran versions available.
    It might also be worth taking a crack at getting the source for the
    USNO's "MICA" (Mac/Win almanac).  Below is an excerpt from the README
    (which is 5 years old).  I haven't kept up with the status of the
    As for testing, I used every published example I could get my hands on,
    including single almanac pages in navigation textbooks, as well as spot
    checks through all the nautical almanacs I could locate.  I also
    generated my own examples with MICA.  Jean Meeus's book "Astronomical
    Algorithms" was what I used for first-round test cases (as well as for
    >MICA 1.5 is a product of the Astronomical Applications Department of
    >the U.S. Naval Observatory.  It is available for both DOS (PC) and
    >MacOS systems.  MICA 1.5 was published for the Naval Observatory by:
    >     Willmann-Bell, Inc.
    >     P.O. Box 35025
    >     Richmond, VA  23235  USA
    >     (804) 320-7016 (voice)
    >     (804) 272-5920 (fax)
    >     http://www.willbell.com
    >Please direct all orders and questions about orders to the publisher.
    >The MICA developers welcome your comments, criticisms, suggestions, and
    >problem reports.  However, we are able to provide only very limited
    >technical support services, and these will be provided through the
    >regular mail.  We regret that we can not respond to any telephone
    >inquiries or correspondence sent by e-mail or FAX.
    >Please send all technical correspondence concerning MICA to:
    >     U. S. Naval Observatory
    >     Code: AA/MICA
    >     3450 Massachusetts Ave., NW
    >     Washington, DC  20392-5420 USA
    >When writing to us, please be sure to indicate the version of MICA
    >being used and information concerning your computer system
    >configuration (CPU type, RAM, hard disk, etc.) if relevant.
    >The Astronomical Applications Department of the U.S. Naval Observatory
    >maintains a Web site providing a wide variety of astronomical data,
    >answers to frequently asked questions, and up-to-date information on
    >its publications and software products. Point your browser to
    Hal Mueller                hal{at}mobilegeographics.com
    Mobile Geographics LLC     http://www.mobilegeographics.com/
    Seattle, Washington        (206) 297-9575
    MapTap public test now underway!

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