Next message: Herbert Prinz: "Re: Moon Parallax, Math Trivia (was Re: venus)"
A few comments and questions.
Fred,
I'm glad to hear you did some sights from a moving vessel.I've been
following your reports of the sights you take from dry land for some
time.You do seem to "have it down" in the care you take and the accuracy you
achive of those reductions.But it is a totally differant animal,a totally
differant game,while taking cuts from a vessel or moving object.Especially
on a small moving object.
Did you average a number of altitudes/times on each of your sight sessions
on board when you got 9.0 to 12.0 min of arc differance or just take 1 cut
each session?
Even so they're not all that bad a result in the real world if you've not
had much experiance doing it in that environment.
Jim,
One of these times you're on the "lunch hook" and practicing try to use a
short horizon in your sighting proceedure and practice working that out.It's
interesting and may come in handy at sometime in the future.
Is it your goal to become proficiant enough, or I should say comfortable
enough, through practice and averaging to rely on a single cut of each
object taken during a session to reduce for LOPs with confidance? Or do you
believe even if you're at the confidance level you desire to still use
averaging proceedures to gain the needed LOPs?
Bruce,
I really liked the angle of what you wrote about old time navigation
practices/phylosophies yesterday.About not useing presant day ways of
looking at things and useing them to explain the way it used to be
viewed.That, to me, is an important point in not only navugation topics but
others as well.
