Next message: George Huxtable: "Re: Magnetic Variation - Lewis and Clark"
In a message dated 2/18/2004 12:20:32 PM Eastern Standard Time,
writes:
Can we plot a celestial sight if we do not have a nearby "assumed position"?
Yes!...3 CLOP's will have a common intersection at only one place on the face
of the earth. You can plot these using the GP's of the bodies as the center
of the COP and the co-altitude as the radius of the COP. An example of this
is a problem used in one of the books I have. It says that you are somewhere
on earth and you take these 3 sights and gives the data (date, time, Hs
etc....). It then asks "where are you?" At first glance many people think that this
is an impossible problem. However, the plots are possible, although a little
cumbersome, because of the typical radius' involved.
Gary Harkins C400 #140 "Cygnus"
Website http://www.hometown.aol.com/htycgary/myhomepage/index.html
Harbour Towne Marina, Muskegon, Michigan Slip C-28
Harbour Towne Yacht Club, Life Member
C400 National Association
United States Power Squadrons-JN
NRA Life Member
MCRGO (Michigan Coalition for Responsible Gun Owners)
JPFO (Jews for the Preservation of Firearms Ownership)
