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Years ago I did a book on Lat/Lon by Noon Sight, so I've been
following this topic with considerable interest. I dusted my book off
and using the altitude and time data from George's spread sheet "Long
Around Noon.xls (SS)" refreshed myself on the method which consists of
taking from a table based on the north or south component of a boat's
speed, a  longitude correction in minutes of arc.

My work sheet is attached, but to cut to the chase, I got a longitude
1' less than George's; latitude the same as his.

On 4/17/09, James N Wilson  wrote:
>
>  George:
>
>  Oops! I was hasty when I compared the five minute difference between
>  maximum altitude and LAN to the hour of the sight taking process. It's
>  huge compared to the six minutes I allocate for plotting. But I can't
>  tamper with the sight selection, since it's natural. I may have to change
>  the WT scale. I'm about to learn some more.
>
>  I appreciate your criticism. It  makes me think.
>
>
>  Jim Wilson
>  ____________________________________________________________
>  Save $10 on Flowers and Gifts!
>  Shop now at www.ftd.com/16714
>
 
>
>
>  >
>

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