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    Re: Ex-Meridian Sight using Inmans
    From: Greg Rudzinski
    Date: 2020 Jun 10, 10:27 -0700

    Compare to a pocket 6" slide rule ex-meridian reduction which isn't quite as precise but darn close. Formula:  .52(t)(t)cos Lat cos dec / cos Ho

    .52 (11.7)(11.7)(.76)(.92)/(.906) = 54.9' correction to add

    24°57.5  +  23° 1.9'  +  54.9' = 48° 54.3'

    90° - 48° 54.3'  = Lat 41° 5.7' S

       
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