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    Re: Silicon Sea
    From: Robert Gainer
    Date: 2006 May 21, 10:53 -0400

    The list is shutting down at the end of the month and pretty much everybody 
    has moved on to join the Google version so an faq will not be needed. It 
    would have been nice when I first joined this list.
    Thanks for the pointer to ICE. I downloaded it and it looks to be very nice so 
    I am going to give it a try. Lots of other nice things on that site so when 
    the rain starts today I will look around a bit.
    Robert Gainer
    > From: FJones 
    > Date: 2006/05/21 Sun AM 10:42:22 EDT
    > Subject: Re: Silicon Sea
    > You may want to try http://www.celnav.de/page3.htm and download
    > ICE.ZIP.  I have never experienced a problem with it.  There are
    > many other applications at this URL that may also be useful to some
    > of you.
    > The DOS based ICE files are compressed of course and very small
    > by todays standards.  This application provides ephemeris data from
    > 1800 to 2045.  ICE can use other star catalogs if needed.
    > I think ICE may still be commercially available for a few dollars but I
    > did not research that.  You might check with Celestaire or Willmann-
    > Bell, Inc. for it.  Purchase the latest version of MICA if you really
    > want to get the best.  MICA (covers shorter time period, 15 years?)
    > is more accurate than ICE (covers about 250 years) but ICE is more
    > than adequate for navigation.
    > You may want to visit http://aa.usno.navy.mil and look at software
    > for more information on MICA.  Someone recently mention that
    > MICA is online but not downloadable.  Also take a look at
    > http://www.lsrp.com/stars.html.
    > Perhaps someone will evaluate the various almanac offerings and
    > report their findings to the list.  We need a set of FAQs for the list
    > that covers the major topics that get discussed.  Each FAQ should
    > be kept up to date and possible posted on the list weekly.
    > Frank J.
    > Rochester, NY
    > Date sent:              Sun, 21 May 2006 06:55:09 -0400
    > Send reply to:          Navigation Mailing List 
    > From:                   Robert Gainer 
    > Organization:           Fisheries Trust
    > Subject:                Re: Silicon Sea
    > To:                     NAVIGATION-L@LISTSERV.WEBKAHUNA.COM
    > For our purpose I think it would be better to make copies of the
    > relevant pages from the Nautical Almanac. The end use is to
    > provide a
    > lookup table to solve workbook problems. So part of the learning
    > experience it to find the data in the actual pages. Does Mystic keep
    > old Almanacs? Who might have out of date books like this? Thanks,
    > Robert Gainer
    > >
    > > From: Alexandre E Eremenko 
    > > Date: 2006/05/21 Sun AM 05:46:24 EDT
    > > Subject: Re: Silicon Sea
    > >
    > > > As far as I know, everyone uses the algorithms described by Jean
    > > > Meeus. I seem to remember that at least one list contributor
    > > > calculates data as needed directly, for virtually any date in the
    > > > past or future.
    > >
    > > I remember an old discussion on the Nav-L list on the best method of
    > > generating an almanac. Using Meeus seems (to me) very hard and time
    > > consuming (his formulas contain many terms and one has to input a
    > > lot of numerical coefficients). As I remember, Frank proposed a
    > > simpler solution: downolading all ready data from some site on the
    > > web. This was a large file. Frank never said however how his own
    > > almanac works, whether it uses pre-computed data, or computes each
    > > time by Meeus's or similar formulas.
    > >
    > > Alex.
    > >

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