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    Re: Scrap paper with time sights c.1870
    From: Hewitt Schlereth
    Date: 2013 Feb 21, 10:13 -0800

    Frank, this is slow going for me. I'm not at all quick or comfortable with 
    time sights. Nor have I had my second cuppa. :-)
    Anyway, a question: In the lower left of the upper left quadrant, the number 
    "18 36" looks like an angle (18* 36') and the "19" under the "36" to be 
    (19'). Then should't the addition (if it is an addition) result in 18* 55', 
    not "18 45" ?
    Sent from my iPad
    On Feb 21, 2013, at 9:11 AM, "Frank Reed"  wrote:
    > Lars, you wrote:
    > "It is a 9 am sight of sun, lower limb, height of eye 17 feet.
    > December 27th, 1871 at GMT 11h51m55s civil time.
    > Latitude 36d37m north, longitude 42d38m west.
    > Chronometer 3m52s fast on GMT.
    > The nautical table used did not contain log sine square half angle."
    > Nice! I only got a few of the details before I set it aside. How confident 
    are you in the year of the observations? There is no other data here except 
    another sheet of scrap paper, probably from the same voyage, with about sixty 
    more time sights. Would anyone like to see those?
    > -FER
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