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    Re: Revised Nautical Almanac Concise Sight Reduction Tables
    From: Hanno Ix
    Date: 2015 Feb 21, 14:42 -0800
    Hi, Greg -

    RIC^3!

    How long did each reduction take you?
    Are you familiar with using NASR,? If so, how long would that
    take you?

    H

    _______________________

    PS: I believe you are interested in circular slide rules.
    Any thoughts about the designs I recently proposed?



    On Sat, Feb 21, 2015 at 12:06 PM, Greg Rudzinski <NoReply_Rudzinski@fer3.com> wrote:

    Compared are four short table reductions all performed on the same side of an index card. Weem's, Dreisonstok, Hughes, and Doniol.  All are a pleasure to use without the need for a form. Weem's, Dreisonstok, and Hughes use an assumed position and log tables. Doniol uses a DR position and a natural haversine table.  Doniol does involve a bit more math but makes up for it by using the DR position with a complete table set that fits in the wallet (try putting 229 in your wallet ;-).

     

    Greg Rudzinski



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