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----- Original Message -----
From: Chuck Taylor 
Date:         Mon, 27 Sep 2004 18:09:45 -0700

>
> Time Sight of the Sun
>
> At anchor, position by GPS:
>         Lat   48d 30.1' N
>         Lon  122d 49.5' W
>
> 25 September 2004
> Corrected UT (GMT): 23-17-12
> Corrected Ho:       24d 54.3'
>
> Almanac data:
>         GHA Sun:  171d 27.4'
>         Dec Sun:    1d 17.6' S
>         EqT:   + 8m 38s
>         GMT:  23-17-12
>         GAT:  23-25-50
>
> Method 1:  Direct Computation
>
>         Lat = L = 48.50167
>         Dec = d = -1.27833
>         Ho  = h = 24.90500
>

> Method 2:  Using log tables
>
> First compute polar distance:
> p = 90d + 1d 17.6' = 91d 17.6'
>
>
> h    24d 54.3'
> L    48d 30.1'    log sec  9.12462


According to Norie's NT, Log sec 48d 30.1 is 10.17874
Friocourt does not give the sec but since colog sin = log sec, I found 0.178749 in the table.
My own calculations gives the value 0.17874970780897
(but I am only sure to the 10th figure, Allow me some French inaccuracy)

I di not check all the computation but the result should be :
9.22920 which is log hav 48d 37.54' (48d 37'32.4")
Is there a Nobel price winner in the list...
:o)))))))))))))))))))))))))))


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