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    Re: almanac software
    From: Hal Mueller
    Date: 2002 Mar 7, 23:43 -0800

    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
    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 algorithms).
    >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 http://aa.usno.navy.mil/AA.
    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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