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Subject: Re: [Nml] Sunset sight?
From: LYNN H OGDEN (VJJN45A@XXX.XXX)
Date: Thu Oct 29 1998 - 18:32:07 EST
-- [ From: Lynn H. & Kathy Ogden * EMC.Ver #2.5.3 ] --
I guess what we need to do here is define terms. Positioning to me
equals fix or similar. Chuck is correct that using such a technique is
useful in "life boat navigation", but life boat navigation tell you
weather your closer to North America or Europe and which way to row. ;-)
It's not something I'd want to use as my basis in making decisions in
making a land fall. Likewise, some believe that a two body fix is also
not accurate enough for making land fall. That's not to say that it
hasn't been done.
To answer your question about "how close": It depends on your ability
to allow for the variables.
LO
-------- REPLY, Original message follows --------
Date: Thursday, 29-Oct-98 01:00 PM
From: Richard Edwards \ Internet: (richard@XXX.XXX)
To: Lynn H. & Kathy Ogden \ PRODIGY: (VJJN45A)
Subject: Re: [Nml] Sunset sight?
On Oct 28, 9:15pm, LYNN H OGDEN wrote:
> Subject: Re: [Nml] Sunset sight?
> -- [ From: Lynn H. & Kathy Ogden * EMC.Ver #2.5.3 ] --
>
> It's possible, but not likely. There are too many variables created
by
> atmospheric conditions, refraction, and estimating semi-diameter and
> when that semi-diameter is on the horizon.
>
How about in an emergency situation? How close could you come to a
position?
> Now azimuth or amplitude of the Sun is easy to find so that you may
> correct your compass, but positioning is near impossible.
>
>
> Subject: [Nml] Sunset sight?
>
> Would it be possible to find position (or at least longitutde),
without
> a sextant by marking the time at sunset and going to the tables with 0
> degrees as the altitude?
>
>-- End of excerpt from LYNN H OGDEN
-------- REPLY, End of original message --------
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