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Not really luck. This is the way Eratosthenes measured the
circumference of the earth circa 200 BC. Instead of a sextant box he
used a well in Syene, a camel, and an obelisk in Alexandria. Go to the
head of the class.

HewS

On 7/18/08, Greg Rudzinski  wrote:
>
>      My sextant box was sitting before me on the dock casting a
>  shadow.  Could this shadow provide me with a LOP?
>  The answer is yes. The inverse tangent of the sextant box height
>  divided by the length of the cast shadow generates an hs. I wasn't
>  sure wether to treat this hs as an upper or lower limb so I just did
>  the reduction as an upper limb to see what would happen.
>
>  Latitude 34 09.8'N   Longitude 119 14.0'W   Height of eye at zero
>
>  inverse tangent of (311.4mm/148.5mm) = 64 deg. 30.3' (hs)  at
>  GMT(UTC,UT1) 21H 47M 28S on 07/11/2008
>
>  Azimuth  248.9 true   Intercept 17.4' toward
>
>    A very lucky LOP I think!
>
>
>  >
>

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