NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: A basic sight reduction question
From: Alexandre Eremenko
Date: 2012 Apr 4, 19:48 -0400
From: Alexandre Eremenko
Date: 2012 Apr 4, 19:48 -0400
Stan, As I already tried to state, there are several distinct discussions mixed: a) What is the proper procedure b) How to teach students c) How is Almanac made. On my opinion, the procedure described in the Almanac is proper. And this gives answers to a) and b). To discuss c), which I agree is an interesting question, would you please give a specific example (date, planet/Moon) for which the v or d correction for 0 minutes of time is not zero? Then we can stick to this example for some time. Alex. > > Alex, > > I agree "There should be as little as possible "cases" and "exceptions"." > But those are some of the most interesting points of discussion. > > > Stan > > > > -----Original Message----- > From: Alexandre E Eremenko> To: NavList > Sent: Wed, Apr 4, 2012 5:40 pm > Subject: [NavList] Re: A basic sight reduction question > > > >>From my own experience in sight correction and reduction > (with several different kinds of tables, with a calculator, > and by hand), I conclude that the principal source of errors is > BLUNDERS. (I am a professional mathematician). > Researchers who > investigated this confirm that this is the case with professional > seamen as well. > > The simpler and more uniform the procedure is, less likely are blunders. > (Understanding of what you are doing, is a completely separate question. > It is good and useful to understand all steps). But when it comes to > practice, more automatic is the procedure, less the probability > of blunders. > > There should be as little as possible "cases" and "exceptions". > > Alex. > > > > > > > > > > > : http://fer3.com/arc/m2.aspx?i=118715 > > >