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    Re: Sight reduction formulae
    From: Alan S
    Date: 2011 Dec 1, 14:01 -0800

    Randy:

    One more point:

    Dec comes from the Nautial Almanac, which spedcifies Dec as being either North or South. With Lat being North, is Dec is "same name" go straight ahead. If Lat is North and Dec is South, you need to use the change sign button on your calculator, however it is described. On my old HP 11C, the appropriate button is identified as CHS.

    Good luck.

    Alan
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