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    Re: Logic of shades
    From: Paul Hirose
    Date: 2018 Oct 27, 09:43 -0700

    On 2018-10-26 9:15, alexander duytschaever wrote:
    > for now, my answer is that a SR can serve for interpolations; it doesn't 
    have enough digits to provide sufficient accuracy. or maybe with A LOT of 
    sightings, who knows...
    
    Last year I tested a 10 inch slide rule with 10 sight reduction problems
    generated at random by computer. Root mean square altitude accuracy with
    the Bygrave formulas was 2.5 arc minutes.
    
    http://fer3.com/arc/m2.aspx/Bygrave-sight-reduction-slide-rule-Hirose-dec-2017-g40895
    

       
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