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    Re: Bowditch sightreduction table (Ageton?)
    From: Alan S
    Date: 2012 Apr 7, 19:31 -0700

    Lu Abel:

    Re your last, corrrect me if I'm wrong, but HO 229's tables were computer generated. HO 214's tables were "calculated" using log tables or who knows what. As to your referencse to "calculators", sounds right to me.

    As to slide rules, I hadn't so much as looked at one in close to 50 years, I used to use Smoley's Tables at work, until I saw some posted comments on doing SOME sight reduction calculations with a slide rule. I ended up buying a couple on ebay, and play around with them now and then.

    Someone once offered, re slide rules, "if the answer looks wrong, it likely is wong". They aren't all that accurate, but if 2 or 3 decimal places will serve, they won't in celestial nav, slide rules are pretty good "outdated technology".

    I've had an HP-11C for about 20 years. Greatest thing since "sliced bread", or words to that effect.
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