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    Re: 40+ year ambition achieved
    From: David C
    Date: 2016 Jul 25, 16:24 -0700

    I reworked the time sight and discovered that I had interpolated the log cos table incorrectly. I had added the difference rather than subtracting it. The correct esults are

    Norie t = 17° 33.7'

    Cloudy Weather  t = 17° 35'

    I have attached a scan of the Cloudy log cos table. Note that the characteristic  has values from 1 to 5. I assume that these are bar 1 to bar 5 although it does not state this specifically. I am sure I have read somewhere that mariners did not like/understand the bar notation. Other tables I have use the +10 notation  (OTTOMH I cannot remember what it is called). Maybe someone could comment on this?

    I have also attached a photo of AC Johnson showing what a fine Victorian gentleman he was.  His side-burns do not show very clearly in the scan.



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