NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Ideal tables
From: Dave Weilacher
Date: 2002 Jan 25, 3:27 PM
From: Dave Weilacher
Date: 2002 Jan 25, 3:27 PM
I would like to see H.O. 249 vol I, pretty much as is. For sight reduction tables, I would like to have H.O. 229 tables to the level of precision that H.O. 249, vol II & III cover. (to the nearest minute, not 10th) As for the multiplication tabels for 'd' and declination, I'd want the H.O.249 version. So... What are these called? I can't be the only guy that wants the best of both worlds. Original Message: ----------------- From- Hal Mueller hal@MOBILEGEOGRAPHICS.COM Date: Fri, 25 Jan 2002 10:33:29 -0800 To: NAVIGATION-L@LISTSERV.WEBKAHUNA.COM Subject: Re: [NAV-L] Lunar distances From last summer: At 10:43 AM -0700 7/22/01, Dan Allen wrote: >In the book entitled "History and Bibliography of The New American >Practical Navigator and The American Coast Pilot" by John F. >Campbell (Peabody Museum, Salem, MA: 1964), it says in part on page >119: > >Bowditch continued to be published without any major revisions until >1887, when it again underwent revision. Although seach succeeding >printing resulted in minor changes, Bowditch did not have its next >major revision until 1907. This revision almost saw the lunar >distance problem eliminated from the work, but it was decided, in >view of its archaic principles, to relegate it to the appendix. > >In 1914, Bowditch was again revised and improved. In charge of this >revision was Lieutenant G. W. Logan, USN. A sign of the changing >times is noted in this revision, as the chapter on lunar >observations was finally excluded. It had been a part of the work >since it was first printed in 1799. > >So there you have it. Editions printed up until 1913 had lunars, >and the best material was probably pre-1907. I just got an 1888 >version which has excellent coverage of lunars. > >Dan > -------------------------------------------------------------------- mail2web - Check your email from the web at http://mail2web.com/ .