NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Fw: Sight Reduction by Hand you might like
From: Alexandre Eremenko
Date: 2013 Dec 26, 11:18 -0500
From: Alexandre Eremenko
Date: 2013 Dec 26, 11:18 -0500
�rjan, Can you point at the place n the archive where this is discussed? > I was browsing the archive and found this somewhat interesting. > the method is not as fast as weems LOP book or HO249 but compact, 7 pages > is hard to beat and that includes 2 pages of instructions, 1 for a form > and two for examples... I am surprised that anyone would use this method since logarithms were invented. Of course the tables for solving the triangle can be reduced to few pages if one does not care about speed. For example, the Russian set of tables MT-43 contains the "tables for solving Sumner's problem" that occupy 20 pages. Alex. > Only thing I would do differently is having degrees and minutes column > parallel to the minutes only column,mainly to ease two crucial steps, the > conversions of dec Lat and LHA from degrees and minutes to minutes only > and back. > ---------------------------------------------------------------- > NavList message boards and member settings: www.fer3.com/NavList > Members may optionally receive posts by email. > To cancel email delivery, send a message to NoMail[at]fer3.com > ---------------------------------------------------------------- > > : http://fer3.com/arc/m2.aspx?i=125923 > > > >