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    Re: Confusion in NAO sight reduction tables...?
    From: Herbert Prinz
    Date: 2006 Sep 13, 08:17 -0500

    Geoffrey Kolbe wrote:

    >How would you answer this?
    >
    >Suppose A = 74° 45'.  "Set A° = the nearest whole degree of A and A' = the
    >minutes part of A."
    >
    >Would you set A° to 74 or 75?

    >

    A° is to be set to 75.

    The wording is correct and is the same in the N.A. for 2007. The same
    logic applies to F°.

    You see, the auxiliary interpolation table is folded at 30'; If A' > 30'
    , the sign for the correction changes! (Same for F'; see steps 5 and 6.)

    Herbert Prinz

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