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Re: Exercise #5 Lat/Long near Noon.
From: Jeremy C
Date: 2008 Jun 2, 04:40 EDT
From: Jeremy C
Date: 2008 Jun 2, 04:40 EDT
Wow Andres,
Way too much Calculus for me to handle out here at sea. I have been
removed from this math for more then a decade. Interesting to see the
errors in each sight from the graphs however. Good to determine my
personal error in sights. I see you have me off of LAN by 5 seconds if I
am reading this correctly. I will have to recompute Hs to Ho for your time
to determine Lat error when I am next on the bridge. I will post those
results (unless anyone beats me to it).
I am definitely going to repeat this experiment in the Fall when I return
out here to see how the results change when the sun is in the Southern
declinations and closer to the Equinox. I hope that you run the data and
see how we do. I just hope I can give you a good set of data.
Jeremy
In a message dated 6/2/2008 6:25:52 P.M. West Pacific Standard Time,
aruiz@orona.es writes:
Jeremy,
I have attached the Hs and time of LAN using Least squares fitting:
The curve equation is: Hs = a0+a1*t+a2*t2
The maximum gives:
t LAN = -a1/(2a2)
Hs LAN = a0-a2t2
Andrés
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