NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Silicon Sea problem solving
From: Dan Hogan
Date: 2000 Apr 11, 10:14 PM
From: Dan Hogan
Date: 2000 Apr 11, 10:14 PM
Patrick: If SWMBO will not permit the purchase of a navigation manual, I suggest you use what your local library may have available. You will need an understanding of the basics of celestial and Dead-reckoning navigation. "Bowditch" Pub NO. 9, The American Practical Navigator or Dutton's Navigating and Piloting. The Nautical Almanac Concise Tables are sight reduction tables normally used for sight reduction of all astronomical bodies listed in the almanac. The Hc(calculated altitude) and the Zn(azimuth) are used to plot the LOP(line of position) of the body on a plotting sheet. Download POSPLOT.EXE form the NAV-L web sute. It is a windows program that prints plotting sheets on a printer. On 11 Apr 2000, at 18:41, Patrick McVey wrote: > I had great results using GhostView (a freeware GNU/Windows program that > views & prints postscript files) to print the VS-OP plotting sheet named > nav.ps on your ftp host. I am having trouble understanding the sight > reductions. From a passage in the Yr2000 N.A., they say the Concise Sight > Reduction Tables are used for determining a "H-calculated" I can see your > point though where that would be good enough for SS legs. I will try it. > I'm plugging away & having fun doing it. Thx Patrick > Dan Hogan dhhogan@nav.cnchost.com NAV-L Web Page: http://nav.cnchost.com
