NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Celestrial Navigation
From: Glendon
Date: 2002 Jul 1, 09:53 +1000
From: Glendon
Date: 2002 Jul 1, 09:53 +1000
Hi Vic, For a while something went wrong with my subscription to the group and I did not receive any mail....simply a matter of subscribing again. There are many PC programs available for sight reduction. Some of them are old, DOS based, and I find a bit clumsy to use. Typical of these are the GRUPP suite by George Rupp, and NAVCHK. I think I got these from the NIMA site, . Other useful sites are http://www.navcen.uscg.gov/ , and http://aa.usno.navy.mil/ . Also useful is Andre Ruiz site, http://www.geocities.com/andresruizgonzalez/ . Another source is http://www.boat-links.com/boatlink.html . And there are also some programs on the NavList webpage, of course. Amongst the more modern ones which I like is Navigator 32 available from www.tecepe.com.br/nav . Lee Martin ----- Original Message ----- From: "Vic Fraenckel"To: Sent: Monday, July 01, 2002 8:26 AM Subject: Celestrial Navigation > I joined this Mail List back in March. I have not received any mail from the > list in the past month or two. Is anyone out there any more? > > I have wanted to do tableless celestrial navigation on my computer for quite > some time and have been searching for a way to do this. My trusty Google > engine finally hauled me to Paul J. Heafner's "Funamental Ephemeris > Computations" and the "JPL Planetary and Lunar Ephemerides" CDROM. I have > been studying the book to try and get an understanding of what's going on in > there. In the past couple of months I have progressed about 1/3 of the way > thru the book and have tried out many of the routines found there. Now that > I have invested a goodly amount of time in this project I have come to the > point of wondering if I am barking up the wrong tree. The focus of the book > is Astronomy. As I am coming into this as a beginner as far as the Astronomy > is concerned, I would like to know or understand that this research is going > to provide me with what my goal is - tableless celestrial navigation. > Programming is NO mystery to me as a retired Software Engineer. I am > assuming that given the understanding of extracting data from the JPL > Ephemerides and massaging it with software will yield me the figures that > are equilvalent to those that we all can find in the Nautical Almanac and > that I will end up with the proper algorithms to go from sextant to a > position that is reliable. > > ANY enlightenment would be greatly appreciated. > > TIA > > Vic > ________________________________________________________ > > Victor Fraenckel - The Windman vfraenc1@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)