NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: H.O 211 math error
From: Joe Shields
Date: 1999 Feb 26, 10:44 PM
From: Joe Shields
Date: 1999 Feb 26, 10:44 PM
Many thanks for your responses. Kind of scarry that I could make such an easy math error. I'm usually so concerned with possible errors in the As and Bs looked up in H.O 211 that I guess I just kept overlooking the error in LHA. I have H.O. 249, but am on a kick right now to see how accurate I can get using the approx. Sun decl./Eq. of Time table that came with my Mark 3 Davis sextant, the condensed Ageton table (Bayless), and the altitude correction page and the time to arc conversion page (both from the Nautical almanac). The whole thing takes up 4 double-sided 8 1/2 * 11 sheets of paper. Re-doing some sights using this bare-bones kit has opened my eyes as to how accurate you can get with so little to carry around. That is, if one can subtract correctly. Thanks again. -- Joe ---WSMurdoch@aol.com wrote: > > Just looking at the numbers should the LHA be 11d 46' W rather than 9d 46' W ? > > I have a copy of Arthur A. Ageton, Manual of Celestial Navigation, 1961. In > the preprinted forms for using the method, Admiral Ageton suffixes both G.H.A. > and L.H.A. with W. Granted it is unnecessary, but it is his method. > > The book is interesting as it gives a method for reducing sights from not only > the D.R. position as I learned in JN but also from an assumed position. > > Does anyone know how Admiral Ageton pronounced his name. Was it "age ton" or > "aj a ton" ? I have heard both said. > > Bill Murdoch > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-= > =-= TO UNSUBSCRIBE, send this message to majordomo@roninhouse.com: =-= > =-= navigation =-= > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-= > _________________________________________________________ DO YOU YAHOO!? Get your free @yahoo.com address at http://mail.yahoo.com =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-= =-= TO UNSUBSCRIBE, send this message to majordomo@roninhouse.com: =-= =-= navigation =-= =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=
